Understanding Scatter Plots and Correlation

Which of the following best describes a scatter plot?

• A graph that shows the frequency of data in intervals

• A graph that displays individual data points based on two variables

• A graph that shows parts of a whole as sectors of a circle

• A graph that connects data points with line segments

Tags

CCSS.8.SP.A.1

What does a positive correlation in a scatter plot indicate?

• As one variable increases, the other decreases

• There is no relationship between the variables

• As one variable increases, the other increases

• The variables are unrelated

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CCSS.HSS.ID.B.5

If the points on a scatter plot are closely clustered around a straight line that slopes downward, what type of correlation is shown?

• Positive correlation

• No correlation

• Negative correlation

• Perfect correlation

Tags

CCSS.HSF-LE.A.1B

Which of the following is the equation of a line of best fit in slope-intercept form?

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

• The slope of the line of best fit

• The strength and direction of a linear relationship

• The mean of the data set

• The total number of data points

Tags

CCSS.HSS.ID.C.8

• Perfect positive correlation

• Perfect negative correlation

• No linear correlation

• Strong linear correlation

Tags

CCSS.HSS.ID.B.5

Tags

CCSS.HSS.ID.B.5

What is a residual in the context of scatter plots and regression?

• The difference between the observed value and the predicted value

• The slope of the regression line

Tags

CCSS.HSS.ID.B.6B

If a data point lies above the regression line, what is the sign of its residual?

• Positive

• Negative

• Zero

• Undefined

Tags

CCSS.HSF-LE.A.1C

Which of the following best describes a perfect positive correlation?

Tags

CCSS.HSS.ID.B.5