What type of correlation is suggested by the scatter plot?
Responses
Negative, Weak Correlation
Negative, Weak Correlation
Positive, Strong Correlation
Positive, Strong Correlation
Positive, Weak Correlation
Positive, Weak Correlation
Negative, Strong Correlation
Negative, Strong Correlation
No Correlation
Positive, Strong Correlation
What should be true about the line of best fit? Check two that apply.
Responses
The line of best fit has to cross through at least 2 points in the scatter plot.
The line of best fit has to cross through at least 2 points in the scatter plot.
The line of best fit must have an equal number of points above and below the line.
The line of best fit must have an equal number of points above and below the line.
The line must show the relationship between the two variables.
The line must show the relationship between the two variables.
The line of best fit could be used as a prediction tool showing a trend in the data.
The line of best fit could be used as a prediction tool showing a trend in the data.
The line of best fit should be an exact representation of the data points.
The line must show the relationship between the two variables.
The line of best fit could be used as a prediction tool showing a trend in the data.
The pair of points (g, -1) and (2, 5) lie on a line with a slope of 32
. What is the value of g?
Responses
4
4
-5
-5
3
3
-2
-2
-5
Match the given information with the equation for the line.
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A line that contains the point (0, -8) with a slope of 3/2
A line that contains the points (0, -2) and (4, 0)
A line that contains the y-intercept (0, -2) and the slope of -3/4
A line that has a slope of 5/3 and a y-intercept of -4
A line that contains the point (0, -8) with a slope of 3/2: y = (3/2)x - 8
A line that contains the points (0, -2) and (4, 0): y = (1/2)x - 2
A line that contains the y-intercept (0, -2) and the slope of -3/4: y = (-3/4)x - 2
A line that has a slope of 5/3 and a y-intercept of -4: y = (5/3)x - 4
Match the equation for the line of best fit with the scatterplot graph.
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y = 20/3 x + 50
y = -11/3 x + 95
y = x
y = 20/3 x + 50: scatterplot with a positive linear correlation
y = -11/3 x + 95: scatterplot with a negative linear correlation
y = x: scatterplot with a strong positive correlation where the points closely align along the line y = x
A botanist collected data on the growth of sunflowers to maturity. She modeled the equation y = x + 12
for the line of best fit. The independent variable, x, is time in weeks and the dependent variable, y, is height in feet. What does the slope mean in this context?
Responses
The sunflower's height increases by an additional 1 foot each week.
The sunflower's height increases by an additional 1 foot each week.
The sunflower's starting height is 1 foot.
The sunflower's starting height is 1 foot.
The sunflower's starting height is 12
foot
The sunflower's starting height is 1 halffoot
The sunflower's height increases by an additional 12
foot each week