What is a regression curve?
4,467 results
Statistics
The following linear equation, y = b0 + b1x, is a regression line with yintercept b0 and slope b1. Define These Terms 1) correlation coefficient 2) Linear regression equation

Calc
The slope of the tangent line to a curve is given by f'(x)=4x^2 + 7x 9. If the point (0,6) is on the curve, find an equation of the curve.

Calculus 1
The curve y = x/(sqrt(5 x^2)) is called a bulletnose curve. Find an equation of the tangent line to this curve at the point (2, 2)

Statistics
Is is possible for the regression equation to have none of the actual (observed) data points located on the regression line?

STATISTICS
A) If a regression experiment has correlation coefficient r= 0.75, what precent of total variation is explained by the regression? B) if 85% of total variation is explained by the regression, and there is an inverse relationship between y and x, then what

Ap calc.. Dying!! Please help!
Given the curve x^2xy+y^2=9 A) write a general expression for the slope of the curve. B) find the coordinates of the points on the curve where the tangents are vertical C) at the point (0,3) find the rate of change in the slope of the curve with respect

Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x divided by y. What is the equation of the curve if (2, 1) is a point on the curve?

calculus
1. Given the curve a. Find an expression for the slope of the curve at any point (x, y) on the curve. b. Write an equation for the line tangent to the curve at the point (2, 1) c. Find the coordinates of all other points on this curve with slope equal to

precal... compound interest and modeling data
Please help me with these 2 problems! 1. Complete the table for the time t necessary for P dollars to triple if interest is compounded continuously at rate r. r= 2%, t=? r= 4%, t=? r= 6%. t=? r= 8%, t=? r= 10%, t=? r= 12%, t=? 2. Draw a scatter plot of the

Math
A. If the correlation coefficient is 0.65, what is the sign of the slope of the regression line? B. As the correlation coefficient decreases from 0.97 to 0.99, do the points of the scatter plot move toward the regression line, or away from it?

Mathematics
The gradient of a curve is defined by dy/dx = 3x^(1/2)  6 Given the point (9, 2) lies on the curve, find the equation of the curve

last calc question, i promise!
given the curve x + xy + 2y^2 = 6... a. find an expression for the slope of the curve. i got (1y)/(x + 4y) as my answer. b. write an equation for the line tangent to the curve at the point (2,1). i got y = (1/3)x + (5/3). but i didn't any answer for c!

12th Grade Calculus
1. a.) Find an equation for the line perpendicular to the tangent curve y=x^3  9x + 5 at the point (3,5) [* for a. the answer that I obtained was y5 = 1/18 (x3) ] b.) What is the smallest slope on the curve? At what point on the curve does the curve

Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15

Economics
The demand curve for a monopoly is: 1. the MR curve above the AVC curve. 2.above the MR curve. 3.the MR curve above the horizontal axis. 4. the entire MR curve.

Statistics
For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a, a,b b, b,a c, 0,a d, 0,b

calculus
Notice that the curve given by the parametric equations x=25−t^2 y=t^3−16t is symmetric about the xaxis. (If t gives us the point (x,y),then −t will give (x,−y)). At which x value is the tangent to this curve horizontal? x = ? At which t value is

math
The table shows the depth (d metres) of water in a harbour at certain times (t hours) after midnight on a particular day. time t (hours) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 and the in the next column corresponding to the figures above is depth d (m) 3.0 3.3

Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (3, 1) is a point on the curve? A. x^2 + y^2 =8

Psychological Statistics
TRUE OR FALSE. The Pearson correlation between X1 and Y is r = 0.50. When a second variable, X2, is added to the regression equation, we obtain R2 = 0.60. Adding the second variable increases the variability that is predicted by the regression equation for

calc
The slope of the tangent line to a curve at any point (x, y) on the curve is x divided by y. What is the equation of the curve if (3, 1) is a point on the curve?

Calculus 1
The curve y =x/(sqrt(5−x^2)) is called a bulletnose curve. Find an equation of the tangent line to this curve at the point (2,2).

Calculus
There is a diagram with the curve y=(2x5)^4.The point P has coordinates (4,81) and the tangent to the curve at P meets the xaxis at Q.Find the area of the region enclosed between curve ,PQ and the xaxis.

Business Statistics
In each case, sketch the two speciﬁed normal curves on the same set of axes: a A normal curve with m 20 and s 3, and a normal curve with m 20 and s 6. b A normal curve with m 20 and s 3, and a normal curve with m 30 and s 3. c A normal curve with m 100

economic
colgate is one firm of many in the market for toothpaste, which is in long run equilibrium. a) draw diagram showing colgate's demand curve, MR curve, ATC curve and MC curve. label colgate profit maximizing output and price

Maths
The slope of a curve is equal to y divided by 4 more than x2 at any point (x, y) on the curve. A. Find a differential equation describing this curve. B. Solve the differential equation from part A. C. Suppose it’s known that as x goes to infinity on the

Calculus
Please help this is due tomorrow and I don't know how to Ive missed a lot of school sick Consider the curve given by the equation x^3+3xy^2+y^3=1 a.Find dy/dx b. Write an equation for the tangent line to the curve when x = 0. c. Write an equation for the

PHYSICS
A circular curve of highway with radius 200m is designed for traffic moving at 100km/h, and is banked so that cars can make the curve even without friction at that speed. What is the correct angle of banking for this curve? Show steps, please.

Stats
Observations are taken on sales of a certain mountain bike in 30 sporting goods stores. The regression model was Y = total sales (thousands of dollars), X1 = display floor space (square meters), X2 = competitors’ advertising expenditures (thousands of

statistics
If the correlation coefficient is 0.54, what is the sign of the slope of the regression line?  As the correlation coefficient decreases from 0.86 to 0.81, do the points of the scatter plot move toward the regression line, or away from it

maths
A curve y has gradient Dy/dx=3x^26x+2a)if the curve passes through the origin find it equation b)Find the area of the finite region included between the curve in a)and the xaxis.?

statistics
Job Sat. INTR. EXTR. Benefits 5.2 5.5 6.8 1.4 5.1 5.5 5.5 5.4 5.8 5.2 4.6 6.2 5.5 5.3 5.7 2.3 3.2 4.7 5.6 4.5 5.2 5.5 5.5 5.4 5.1 5.2 4.6 6.2 5.8 5.3 5.7 2.3 5.3 4.7 5.6 4.5 5.9 5.4 5.6 5.4 3.7 6.2 5.5 6.2 5.5 5.2 4.6 6.2 5.8 5.3 5.7 2.3 5.3 4.7 5.6 4.5

math
Data were recorded for the demand and revenue of a given product. Find the linear regression line which represents the revenue function. Find the quadratic regression curve which represents the revenue function. Data Demand x Revenue y 1 0 100 2 4 139.2 3

Statistics
A set of X and Y scores has SSx=10, SSY=20, and SP=8, what is the slope for the regression equation? a. 8/10 b. 8/20 c. 10/8 d. 20/8 For the regression equation, Y=bX+a, which of the following X,Y points will be on the regression line? a. a,b b. b,a c. 0,

Stats
x y 1 10.0 2 20.0 3 30.0 4 40.0 5 50.0  What would be the slope of this regression line?  Would the correlation between x and y be positive or negative?  How would you interpret these data in terms of linear regression?

Maths
y= ae^(bt)sin(kt) Use a sine regression to determine k, the period of oscillation of this system. State the regression equation and superimpose its graph on that of the data set. help?

college statistics
construct a scatterplot for x,y values x 1 2 3 4 5 y 0.5 0.0 0.51.01.5 what would be the slope of this regression line would the correlation between xand y be postive oe negative how would you interpret these data in terms of regression

statistics
For the multiple regression equation ŷ = 100 + 20x©û  3x©ü + 120x©ý a. Identify the yintercept and partial regression coefficient. b. If x©û = 12, x©ü = 5, and x©ý c. If x©ý were to increase by 4, what change would be necessary in x©ü in

Math: Statistics
1. A regression analysis includes the effect of Age, which is categorised into five levels. How many dummy variables should be defined for including it in the analysis? 2. A regression analysis includes Sex as an explanatory variable. How many dummy

please help  maths
Data are collected on the average secondhand price of a particular model of car, from back copies of car trading magazines. The model of car was manufactured in 2000. Year 2001 2002 2003 2004 2005 Average price (£) 11015 5920 4123 3171 2587 Taking 2001

math
The path of a cliff diver can be modeled by a parabolic curve. The regression equation matching one particular dive is h(t)= 4.9^2+4.6x+24.8 h is height t is time in seconds at what point in meters did the diver reach maximum height?

Another graph
How do I make a graph of f'(1) = f'(1) = 0, f'(x) > 0 on (1,1), f'(x) < 0 for x < 1, f'(x) > 0 for x >1 Thanks. if the derivative is postive on 1 to 1, you have a curve that shope upward as x increases. If the derivative is zero at 1, and 1, thekn at

MATH
A data set has the following points: (0, 2), (4, 1), (6, 0) The slope of the linear regression line is 0.32. Find the yintercept of the linear regression.

Algebra 2
A data set has the following point: (1,8)(2,7)(3,5) The slope of the linear regression line is 1.5 Find the yintercept of the linear regression.

Statistics
I neep help on two questions! A condition that occurs in multiple regression analysis if the independent variables are themselves correlated is known as: 1. autocorrelation 2. stepwise regression 3. multicorrelation 4. multicollinearity (I think this is

statistics
For a given set of data, it is known that x = 10 and y = 4. The gradient of the regression line y on x is 0.6. Find the equation of the regression line and use it to estimate y when x = 8.

Math
A perfect positive or negative correlation means that A) the explanatory causes the yvariable. B) 100% of the variation is explained. C) we get the same regression equation if we switch the x and y variables. D) the slope of the regression equation is 1.0

Statistics
Hi Can anyone tell me in a regression model are the values of 0.13 0.10 A good indication of of the total y explained in a regression model ?? Thanks.

Math
Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11),

Math \ Algebra
Hello! Can you check my answers for these questions? Thank you in advance (= 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11),

Calc.
sketch the curve using the parametric equation to plot the points. use an arrow to indicate the direction the curve is traced as t increases. Find the lenghth of the curve for o

Econ
For a typical negative externality market graph, with Demand curve (also labelled private value), and supply curve (private cost) and a social cost curve above the supply curve. What is the optimal quantity that maximizes total economic well being? Is it

Math
Hello! Can you check my answers for these 4 worksheet questions? Thank you in advance (: 1. The following ordered pairs give the scores on two consecutive 15point quizzes for a class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7),

physics
A car is traveling at a constant speed along road ABCDE. (Curve BC where Bis beginning of curve and C is the end of the curve is in the shape of a "backward C." C is then the beginning of another curve and D is the end of the same curve in the shape of a

Precalculus
You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the unit price for x items. 80 p + x  380 = 0 and 84 p  x  40 = 0 Identify which is the supply curve and demand curve and the

maths
input the following data into your calculator and obtain the best fit power regression function for y in terms of x, for the data x 1 2 3 4 6 y 18.0 14.3 12.5 11.3 10.0 choose the one option which most closely describes the power relationship between x and

economics
Can you please exlain to me if I'm wrong not just correct me. ps. Ceteris paribusor the following markets, show whether change causes a shift in supply curve, a shift in demand curve, a movement along the supply curve, and/or a movement along the demand

Stats
Construct a scatterplot for the (x, y) values below, and answer the following questions. You do NOT need to submit your scatterplot with your answer; however, show all other work. x y 1 2.5 2 5.0 3 7.5 4 10.0 5 12.5  What would be the slope of this

calculus
Compute the area of the region in the fi…rst quadrant bounded on the left by the curve y = sqrt(x), on the right by the curve y = 6  x, and below by the curve y = 1.

calculus
Given the curve defined by the equation y=cos^2(x) + sqrt(2)* sin(x) with domain (0,pi) , find all points on the curve where the tangent line to the curve is horizontal

physics
Can I still use the equation that I generated from my curve when doing the experiment even if the number I want to calculate is bigger than the last point in my curve ( ps the curve is a best fit line) would my answer be accurate??

physics
The grath is a plot of work versus time. The power can determined from a)the xaxis, b)yaxis, c)the slope of curve,d)are under the curve, e)radius of curve

math help
Posted by grant on Saturday, May 12, 2007 at 9:20am. The table shows the depth (d metres) of water in a harbour at certain times (t hours) after midnight on a particular day. time t (hours) 0 1 2 3 4 5 6 7 8 9 10 11 12 13 and the in the next column

statistics
Linear Regression In the babies.dta full dataset, generate a covariate called painind defined as 1 if the infant experienced severe pain upon receiving the shot (pain0 = 7) and as 0 otherwise. In Stata, you can use the commands: generate painind = 0

physics
The firetruck goes around a 180°, 162 m radius circular curve. It enters the curve with a speed of 12.6 m/s and leaves the curve with a speed of 38.8 m/s. Assuming the speed changes at a constant rate, what is the magnitude of the total acceleration of

Math
a curve is such that dy/dx=4x+7. the line y=2x meets the curve at point 'P'. Given that the gradient of the curve at P is 5. State the coordinates of P.

Math
a curve is such that dy/dx=4x+7. the line y=2x meets the curve at point 'P'. Given that the gradient of the curve at P is 5. State the coordinates of P.

Calculus
The length of a curve for 0

Statistics
A certain curve (that is NOT the normal curve) is shown below. The curve is symmetric around 0, and the total area under the curve is 100%. The area between 1 and 1 is 58%. What is the area to the right of 1? I do not know how to do this because it is not

PSYCH
Two common confounding variables that must be controlled in a nonequivalent controlgroup design are: A. selection and regression to the mean. B. selection and maturation. C. maturation and regression to the mean. D. sequence effects and maturation. MY

Economics
You are planning to estimate a shortrun production function for your firm, and you have collected the following data on labor usage and output. Labor usage output 3 1 7 2 9 3 11 5 17 8 17 10 20 15 24 18 26 22 28 21 30 23 (a) Does a cubic equation appear

Math
Sales of a video game released in the year 2000 took off at first, but then steadily slowed as time moved on. The table below shows the number of games sold, in thousands, from the years 2000–2010. Year 2000 2001 2002 2003 2004 2005 Number Sold

Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15 xy = 15

Math
The least squares regression line is a unique line for each data set. True The least squares regression line minimizes the sum of the residuals. False

physics
A car going 30 m/s just barely makes it around a curve without skidding. This curve had a radius of 150 m. The next curve has a radius of 75 m. At what maximum velocity can it go around this curve without skidding?

statistics
An expert witness in a case of alleged racial discrimination in a state university school of nursing introduced a regression of the determinants of Salary of each professor for each year during an 8year period (n = 423) with the following results, with

Economics
If an industry is highly profitable, new firms are likely to enter the market. This would be reflected with a shift of the A demand curve to the right Bsupply curve to the right Csupply curve to the left D demand curve to the left

Statistics
We're doing a project. I have all my data, but I'm not sure about what this is asking for. Use your regression equation to determine the purchase price for the 1999 Jeep Grand Cherokee. How does the predicted value, ŷ, compare to the average selling

Calculus
There is a graph of y=1/sqrtx.Show that the area of the region between line and curve at x=1 and x=3 is 3(5sqrt3/3). 👍 1 👎 1 👁 33 asked by Raj yesterday at 6:35am "Show that the area of the region between line and curve" . What line? Assuming you

college statistics
if the correlation coefficient is o.32 what is the sign of the slope regression line as the correlation co efficient decreases from 0.78 to 0.71 do the oints of the scatter plot move toward the regression line or away from it

Physics
A banked circular highway curve is designed for traffic moving at 90 km/h. The radius of the curve is 70 m. If the coefficient of static friction is 0.30 (wet pavement), at what range of minimum and maximum speeds can a car safely make the curve?

College math
Highway curves If a circular curve without any banking has a radius of R feet, the speed limitL.in miles per hour for the curve is L=1.5 R. (a.)Find the speed limit for a curve having a radius of 400 feet. (b.) If the radius of a curve doubles, what

Math
. Given that x²cos y_sin y=0,(0,π). A. Verify that the given points on the curve. B.use implicit differention to find the slope of the above curve at the given point. C.find the equation of tangent and normal to the curve at that.

math
Given the curve of C defined by the equation x^2  2xy +y^4 =4. 1) Find the derivative dy/dx of the curve C by implicit differentiation at the point P= (1,1). 2) Find a line through the origin that meets the curve perpendicularly.

physics!!!
The speed limit around a curve of radius 85 meters is 30 miles per hour. What angle should the curve be banked at if a car is to be able to go around the curve at that speed with no friction? Help!!!

AP Statistics
A certain density curve looks like an interverted letter V. The first segment goes fro the point (0,0.6) to the point (0.5,1.4). The segment goes from (0.5.1.44) to (1,0.6). (a) Sketch the curve. Verify that the area under the curve is 1, so that it is a

math
Use exponential regression to model the price P(t) as a function of time t since 1994. Include a sketch of the points and the regression curve. (Round the coefficients to 3 decimal places.)

Math
What is a regression curve?

Statistics
Determine the regression line of x+2y5=0 and 3x+3y8=0 (i) y on x and (ii) x on y, (iii) Find r using the regression coefficients

mathgrd 11
what do they mean by sine regression? i am currently working on the grd 11 isu and i am just wondering how i am supposed to incorpporate sine regreession into it? my isu is, you have a picture you have to find a curve in it and figure out the equation of

statistics
A survey was taken in various Statistics classes and the following regression equation was obtained regarding the height and weight of students in the Statistics classes. Regression equation Height = 56.8 + 0.0712 Weight Given the regression equation

Calcus, Math
class of 18 students. (7, 13), (9, 7), (14, 14), (15, 15), (10, 15), (9, 7), (14, 11), (14, 15), (8, 10), (9, 10), (15, 9), (10, 11), (11, 14), (7, 14), (11, 10), (14, 11), (10, 15), (9, 6) Create a scatter plot of the data. What kind of correlation does

statistics
In the following regression, X = total assets ($ billions), Y = total revenue ($ billions), and n = 64 large banks. (a) Write the fitted regression equation. (b) State the degrees of freedom for a twotailed test for zero slope, and use Appendix D to find

math
can someone please help me fast before midnight. a)I need the correlation between x and y b)slope of linear regression c)y intercept of linear regression for the points (1,8)(2,6)(3,4)(4,2)(5,5)

physics
highway curve in northern Minnesota has a radius of 230 m. The curve is banked so that a car traveling at 21 m/s and will not skid sideways, even if the curve is coated with a frictionless glaze of ice. At what angle to the horizontal is the curve banked?

Calculus
The slope of the tangent to a curve at any point (x, y) on the curve is x/y . Find the equation of the curve if the point (3,4) on the curve.

Calculus
The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? a) x^2y^2=15 b) x^2+y^2=15 c) x+y=15 d) xy=15

Statistics
A regression equation was calculated and is given below. The values for Miss America are values such as 0, 1, 2, 3, 4, etc. Regression Analysis: GPA versus Miss America The regression equation is GPA = 3.32  0.0890 Miss America b. What is the response

Physics
A motor scooter rounds a curve on the highway at a constant speed of 25.0 m/s. The original direction of the scooter was due east; after rounding the curve the scooter is heading 28 degrees north of east. The radius of curvature of the road at the location

math
consider the curve defined by the equation y=a(x^2)+bx+c. Take a point(h,k) on the curve. use Wallis's method of tangents to show that the slope of the line tangent to this curve at the point(h,k) will be m= 2ah+b. have to prove this for tow cases: a>0 and