Number of results: 58,817
is there a good, relevant sites where i can get stats extra help?
Thursday, October 11, 2007 at 7:45pm by Keirson
Stats: need help please
Sunday, November 23, 2008 at 6:30pm by Stephanie
stats - still need help
which of the a answers are right? and which of c?
Sunday, October 19, 2008 at 9:38pm by Sam
stats need help
so for c. do i subtract the amounts of the two
Tuesday, March 17, 2009 at 9:59am by jaz
Stats- need someone to check
Monday, February 7, 2011 at 7:50am by Ryan
I need to do a project for ap stats. It can be anything im interested in, and i have to perform some tests and all that I need some ideas!! Somthing that would be interesting..
Wednesday, May 28, 2008 at 6:21pm by MJ
First you need to arrange these numbers in numerical order. Then study this site. http://www.childrens-mercy.org/stats/definitions/iqr.htm
Wednesday, November 18, 2009 at 4:39pm by Ms. Sue
please tell teachers what the subject is - needs probabilty and stats
I showed you how to do the last one, am leaving this more complicated version of the classic prisoner's dilemna problem for a stats teacher (I do physics)
Saturday, September 29, 2012 at 6:53pm by Damon
Judy, Sam, Cindy -- or Whoever has posted the last 12 stats posts -- If you posted your ideas of the answers, a tutor might then help you.
Wednesday, March 31, 2010 at 1:32pm by Ms. Sue
To any Jishka/stats or english tutor
I need help editing this letter.
Friday, December 7, 2007 at 12:02am by Anonymous
You need to repeat the data on the post you are sending to get an answer.
Sunday, March 14, 2010 at 8:52pm by PsyDAG
using a calculator need p value on a r tailed test if the n=9 and the t is 3.204
Friday, December 2, 2011 at 2:11pm by James
stats need help
.45 is .05 away from the mean or .05/.023 = 2.17 standard deviations away from the mean. Your stats book should have a cumulative normal distribution table. Look up 2.17. I get .9850, meaning that the probability of observing a sample where more than 45% is 1-.985 = .015=1.5...
Tuesday, March 17, 2009 at 9:59am by economyst
If you were trying to copy/paste, you will need to type the question in.
Monday, March 2, 2009 at 2:03pm by GuruBlue
You need to type your data, so we can answer your question. Please repost.
Wednesday, March 18, 2009 at 1:06pm by PsyDAG
First you need to rank the data in increasing order.
Sunday, October 16, 2011 at 10:03pm by Ms. Sue
What data and stats do you need to know in order to identify profitable nations in which to export.
Friday, October 5, 2012 at 2:53am by Lisa
I do not understand what I need to do here...very confused...would I multiply 20 x 4 to get 80/7?
Saturday, May 1, 2010 at 3:27pm by Bernice
college,stats/ PLZ HELP:( need it within nxt 6hrs
never mind i got it lol
Wednesday, April 7, 2010 at 10:50pm by Sandra
Stats for the US and Canada show that in North America, the most births occur in September. Wonder if there is correlation based on the fact that Sept is 9 months after all those Christmas and New Year holidays??
Monday, March 2, 2009 at 2:11pm by Reiny
probability and statistics
We haven't a clue about which stats book you're using. Plus -- most of us don't have multiple stats book here at home. With 41 numbers, 12.3 is the top of the 30th percentile.
Wednesday, September 10, 2008 at 6:44pm by Ms. Sue
Looking it up in the back of a statistics text in a table for "distribution of t probability," you need to realize that 1 - .9 = .1. Try .1 with n-1 or 21 df.
Sunday, November 4, 2012 at 11:47am by PsyDAG
can u plz help me with the other problem i posted? i need help so bad! thank u!!
Sunday, October 16, 2011 at 10:03pm by Jennifer
Inadequate data. If this is from a previous post, you need to repeat the data.
Monday, October 17, 2011 at 10:15pm by PsyDAG
<<the idealized uniform random number generator described.>> is not described We are not well staffed to answer stats questions; you would be better served elsewhere.
Wednesday, March 18, 2009 at 6:37pm by drwls
Design and create a class named Stats that has an array of 12 doubles as one of its member variables. The values in the array should be set by making 12 calls to a public member function named setValue that accepts two arguments, an integer indicating which value is being ...
Tuesday, June 8, 2010 at 4:25pm by kyuu09
Stats: need help please
Add the mean scores (giving 170). The standard deviation of the total score is the square root of the sum of the squares (5.2)
Sunday, November 23, 2008 at 6:30pm by drwls
math help asap on stats
i need help asap
Friday, February 6, 2009 at 9:07pm by Anonymous
Angela is conducting a poll on campus to determine the next student representative. How many students does she need to sample for a confidence level of 90% with a margin of error of + or - 5%?
Saturday, May 14, 2011 at 9:45pm by Ana
Does anyone know how to find the variance or something if only the correlation of something is given and the other way around?? I really need help with this! THANK YOU!
Monday, April 6, 2009 at 5:19pm by ash
stats teacher needed
Your title gives no hint as to if you need an English or Latin teacher or whatever, wasting everyone's time.
Sunday, February 16, 2014 at 4:39pm by Damon
Could someone please explain to me how I would read a z table. I have a z score of 2.2 and I need to know what the percentages is. Then if I'm given 8% how do I find the z score?
Tuesday, March 5, 2013 at 9:45pm by Bonnie
You would need more information to determine if the F-values were statistically significant; therefore, I would say a)none of the above.
Friday, October 4, 2013 at 5:57pm by MathGuru
We'll need to know rather more about what that "a" is supposed to be - but I don't think your answer is correct. Whatever "a" is, the answer is unlikely to be just 1-0.84, which I suspect is how you've calculated it.
Saturday, September 13, 2008 at 5:55pm by David Q
You dont need a z-score for this problem. A normal distribution means that half the observations are above the mean, half below. The answer is 50%
Monday, September 28, 2009 at 3:49pm by economyst
Make a Venn diagram. 5% fail math only 25% fail both 10% fail stats only 60% pass both. Of the 30% (of all students) who failed math, 5/6 of that group (25% of all students)failed stats also. That is a conditional probability of 83.3%. Only 16.7% of the math-failing group pass...
Friday, October 15, 2010 at 6:10am by drwls
P.S. Here is a GOOGLE Search on AP Stats in case you haven't seen it: http://www.google.com/search?q=AP+stats&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-US:official&client=firefox-a Sra
Friday, January 2, 2009 at 2:39pm by SraJMcGin
Yes, you will need the mean and the standard deviation of the data. then conduct a one-tail test by comparing your mean to the mean of 40 given.
Tuesday, March 5, 2013 at 12:35pm by Dr. Jane
In my table of my stats book, with 20 df, r = .4227 and with 25 df, r = .3809 are both significant at P = .05. You will need to interpolate for df = 21.
Friday, January 27, 2012 at 1:57am by PsyDAG
If the true population standard deviation was known to be 3, then approximately what minimum sample size would you need in an SRS (simple random sample) if you want a confidence interval for the margin of error of .5 or less?
Monday, February 21, 2011 at 4:45pm by Anonymous
A control group is the group in an experiment that doesn't have anything change. For instance, if scientists are testing a headache medicine, the control group gets a placebo while the test group receives the product that they're testing. Check these definitions for ...
Monday, August 27, 2007 at 6:52pm by Ms. Sue
what are the upper and lower limits of the variable below? upper lower 15-19 60-69 * is there a formula i need to use for this.
Wednesday, September 12, 2012 at 12:24am by Whitney
I need help finding stats about saving money by using the online community for communication instead of in the actual community. How you save money by doing this
Saturday, February 25, 2012 at 4:42pm by Anonymous
incorrect. Law of addition: P(A or B) = P(A)+ P(B)- P(A and B) source: http://www.quickmba.com/stats/probability/
Sunday, December 30, 2012 at 7:50pm by TutorCat
To get P = .05, Ho needs to have μ ± 1.96 SD, Reject Ho, if value is outside that range. P is determined by Z score = (X-μ)/SD. Look up value in "area under normal distribution" in back of your stats text. Is "that" your SD? I hope this helps. If not, repost with ...
Friday, April 24, 2009 at 2:18am by PsyDAG
Accepting the null hypothesis indicates that you believe any variations were due to chance. Unless you want to, you do not need to state that you conclude that the results were due to chance. I hope this helps. Thanks for asking.
Friday, March 6, 2009 at 11:28pm by PsyDAG
You need to assume that the age distribution is normal. Again, normalize the data which have a distribution of ~N(66,4²) and compute probabilities based on the looked up probabilities.
Saturday, August 4, 2012 at 10:01am by MathMate
Stats- need someone to check
The expectation value, or mean value, is the sum of the x*P(x) products, which is 3.06 Of course, one would not expect to find 6% of a person in a house. On the other hand, 3 is a relatively unlikely number for this distribution. 2 and 4 are seen much more often. I do not like...
Monday, February 7, 2011 at 7:50am by drwls
Here's a hint: Use a confidence interval formula for proportions. Here's one example: CI99 = p + or - (2.58)(sqrt of pq/n) ...where sqrt = square root, p = x/n, q = 1 - p, and n = sample size. Remember you need a 90% confidence interval; my example uses a 99% confidence ...
Wednesday, October 31, 2007 at 3:20pm by MathGuru to LT
Here's an excellent summary. http://web.cortland.edu/andersmd/STATS/valid.html
Friday, July 9, 2010 at 10:34pm by Ms. Sue
You'll need to start by finding a confidence interval for 2 samples. Here is one you might be able to use: CI = (mean difference) ± t-value (standard deviation difference/√n) You will need to calculate the means and standard deviations. T-value is found using a t-table ...
Tuesday, April 2, 2013 at 6:05pm by MathGuru
Use the Empirical Rule. http://www.oswego.edu/~srp/stats/6895997.htm
Monday, August 29, 2011 at 2:40pm by TutorCat
Saturday, September 29, 2012 at 6:41pm by Ms. Sue
I agree. http://www.oswego.edu/~srp/stats/variable_types.htm
Wednesday, August 21, 2013 at 3:54pm by Ms. Sue
There is a JAVA tool at http://www.physics.csbsju.edu/stats/QF_NROW_form.html that will let you calculate the least-sqaures fit to your data points. Using it, I got V = 105 A plus a small constant term
Saturday, October 27, 2007 at 11:00am by drwls
You need more data to find the standard deviation, but the mean attendance would be 50 - .1(50). I searched Google under the key words "standard deviation" to get these possible sources: http://en.wikipedia.org/wiki/Standard_deviation http://www.robertniles.com/stats/stdev....
Thursday, April 16, 2009 at 2:32pm by PsyDAG
Expected number is .1*1000 = 100 SD is sqrt(n*p*q) = 1000*.1*.9 = 9.49 90 is 10 away from the mean and 10/9.48= 1.05 standard deviations away. Your stats book should have a cumulative normal distribution table. look up 1.05. I get .8531. Ergo, the probability of seeing more ...
Friday, March 20, 2009 at 5:23pm by economyst
The easiest way to do this is use a binomial probability function table. You will need to determine n, x, and p. I'll give you a hint: x = 0. Once you determine P(0), then subtract the probability you find in the table from 1. That value will be your answer.
Tuesday, November 15, 2011 at 9:01pm by MathGuru
By pure chance, the student should get 50% correct. How much above that would you need to be convinced? What alpha level would you use? P ≤ .10? P ≤ .05? P ≤ .01?
Monday, October 17, 2011 at 7:35pm by PsyDAG
please I really need statistics and exact examples for my debate. I can not go up there and say many people think we are too americanized. We won't win. Please give me some stats. and eg. on the topic "that australia is becoming too american" Thanks Minerva
Friday, April 18, 2008 at 8:26pm by Minerva
The central tendency is the measure that best describes the data. The mean doesn't, because 5 is so much different than the other data. That leaves you median or mode. Check this site and decide which one fits this data. http://www.quickmba.com/stats/centralten/
Thursday, March 31, 2011 at 4:59pm by Ms. Sue
Questions about stats
a non-directional hypothesis and have set your alpha at .01. You have 30 pairs of scores. What is the criterion value of r you need to equal or exceed to have a significant correlation so you can reject the null hypothesis
Wednesday, July 24, 2013 at 10:03pm by Qtexas
I don't see any need to reward research hypothesis, 9if it is adequately stated. Assuming that your dependent variable is some test results, you would need at least ordinal data. http://www.members.cox.net/dagershaw/lol/TwoPlusTwo.html
Saturday, March 5, 2011 at 11:00pm by PsyDAG
International Econ.. Please Help!
Yes. http://stats.oecd.org/glossary/detail.asp?ID=1395 I don't think this country is moving toward freer trade because it still imposes tariffs on final goods. What does your text say?
Sunday, July 25, 2010 at 7:59pm by Ms. Sue
Scientists wish to test the mind-readiing ability of a person who claims to have ESP. They use five cards with different and distinctive symbols( square, cicrle, triangle, line, squiggle). Someone picks a card at random and thinks about the symbol. The mind-reader must ...
Monday, October 17, 2011 at 6:58pm by JONATHAN
Is your symbol, ƒÊ = μ = mean? Ho: μ = 700 H1: μ ≠ 700 For P = .05, need μ ± 1.96 SE SE = SD/√(n-1) I hope this helps.
Tuesday, March 30, 2010 at 12:27am by PsyDAG
Thursday, March 29, 2012 at 8:46pm by Ms. Sue
College Business Stats
Put your subject in the "School Subject" space, so experts in that area will answer your post. However, this is not my area of expertise. We do not do your work for you. You need to earn your own grade. However, we would be willing to check your work.
Tuesday, April 13, 2010 at 12:48am by PsyDAG
A human resources manager at a large company wants to estimate the proportion of employees that would be interested in reimbursement for college courses. If she wishes to be 95% confident that her estimate is within 5% of the true proportion, how many employees would need to ...
Thursday, April 15, 2010 at 8:53pm by Chad
a box contains 100 cards, of which 25 are numbered 1, 35 are numbered 2, 30 are numbered 3, 10 are numbered 4. One card will be drawn from the box and its number X observed. Give the probability distribution of X How in the world do I do this? do I have to manually get the ...
Friday, February 16, 2007 at 11:23am by Anonymous
Thursday, August 19, 2010 at 10:45pm by Ms. Sue
http://science.widener.edu/svb/stats/error.html On the first, percent error is .02/10 x 100 absolute error is .02 On the last, you have to do some math. See the link error=sqrt (.02^2+ .02^2)=.028 then, use the formulas above.
Friday, January 16, 2009 at 1:26am by bobpursley
In that case have a look at http://www.stats.gla.ac.uk/steps/glossary/hypothesis_testing.html
Wednesday, December 8, 2010 at 9:21am by Dr Russ
Three scholarships are available for needy students. Their values are $2,00, $2,400 and $3,000 12 students have applied and no student may receive more than one scholarship. Assuming all 12 students are in need of funds, how many different ways could the scholarship be awarded?
Wednesday, March 16, 2011 at 6:57pm by Maria B
P4 Lesson 3.2 - Attention to the explanation how we calculate the SD (beginning of the lesson); Attention to what is said in parenthesis in the enunciated. -2.6 is not correct P5 Use the t-curve to obtain the p-value. For this question you need to have answered correctly ...
Saturday, August 3, 2013 at 6:25am by Charlotte
Friday, September 23, 2011 at 2:16am by PsyDAG
You don't need to calculate the proportions under a normal distribution. There should be a table in the back of your stats book labeled something like "areas under the normal distribution." You can plug in various Z scores to get the proportions. I hope this helps. If not, ...
Tuesday, January 26, 2010 at 10:07am by PsyDAG
AP Stats B
B is the one without calculus I belive... anyways so descriptive statistics I\'m doing the 2004 AP Statisics AP test Section II part A like my teacher gives us old exams and this is one of those questions the question asks for a boxplot there are outliers the IQR gives me a ...
Sunday, September 13, 2009 at 8:39pm by AP Stats B
By the way read at http://www.stats.gla.ac.uk/steps/glossary/probability_distributions.html
Thursday, January 14, 2010 at 6:58pm by Damon
6,000 / 24,000 = 1/4 http://stats.oecd.org/glossary/detail.asp?ID=2111
Sunday, November 28, 2010 at 1:32pm by Ms. Sue
The sum of the deviations (unsquared) from the mean should always = zero, since the mean serves as a fulcrum (balance point) for the distribution. You need to square the sum of the scores rather than the sum of the squared deviations (squaring each scores deviation from the ...
Tuesday, February 5, 2013 at 9:52pm by PsyDAG
college,stats/ PLZ HELP:( need it within nxt 6hrs
Among Canadian households, 24% have telephone answering machines. If a telemarketing company contacts 2500 households find the probability that between 625 and 650 households, inclusive, have answering machines.
Wednesday, April 7, 2010 at 10:50pm by Sandra
Z = (x - μ)/SD You have values for μ and SD, but need to determine Z to find x. Look in the back of your stat text for a table labeled something like "areas under the normal distribution" with the proportions (.10, ±.375 and .05 respectively) to find the ...
Sunday, September 27, 2009 at 8:40pm by PsyDAG
I've finished studying a full textbook on linear algebra and another on statistics. I've done most of the practice problems and I understand everything covered in these books very well. But I need to know more. Specifically, I'd like to understand more about: - Gauss Markov ...
Friday, April 25, 2008 at 8:13pm by mathstudent
Friday, February 6, 2009 at 8:01pm by Sam
Wednesday, October 14, 2009 at 10:39am by CM
Wednesday, August 13, 2008 at 3:58pm by lala
y,x y,x y,x x,y
Sunday, July 10, 2011 at 7:19pm by Damon
Sunday, July 10, 2011 at 7:19pm by Celest
Monday, July 9, 2012 at 11:50am by James
Friday, September 16, 2011 at 11:09pm by andrew
what is n
Sunday, March 31, 2013 at 6:43pm by chris
Monday, July 29, 2013 at 4:46pm by Anonymous
E y F
Saturday, August 3, 2013 at 6:21am by Anonymous
prob and stats
Friday, October 15, 2010 at 1:14am by 0-0--
Saturday, February 8, 2014 at 3:26pm by Ashley
Monday, February 10, 2014 at 3:17pm by Tracy
You are welcome :)
Monday, February 10, 2014 at 3:17pm by Damon
Monday, February 10, 2014 at 4:02pm by PsyDAG
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 regression line? - Would ...
Sunday, October 7, 2012 at 9:58am by Anonymous