Scatter Plots

How do you calculate a residual?

• actual-predicted

• predicted-actual

Which residual plot represents a good fit?

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Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

After performing analyses on a set of data, Jackie examined the scatter plot of the residual values for each analysis. Which scatter plot indicates the best linear fit for the data?

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Tags

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.8

Which residual plot would indicate that a linear function would not be a good fit to model a data set?

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Tags

CCSS.HSS.ID.B.6

A line of best fit has been drawn on the scatter plot below. The relationship between these variables can be described as having:

• a negative correlation

• no correlation

• a positive correlation

• zero correlation

The scatter plot below represents the relationship between the number of peanuts a student eats and the student's bowling score. Which conclusion about the scatter plot is valid?

• There is almost no relationship between eating peanuts and bowling score.

• Students who eat more peanuts have higher bowling scores.

• Students who eat more peanuts have lower bowling scores.

• No bowlers eat peanuts.

The maximum height and speed of various roller coasters in North America are shown in the table above. Which graph represents a correct scatter plot of the data?

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Based on the line of best fit drawn below, which value could be expected for the data in June 2015?

• 230

• 310

• 480

• 540

The data table below shows water temperatures at various depths in an ocean. What is the linear regression equation for this set of data, rounding all values to the nearest thousandth?

• $y=-8.940x+209.768$

• $y=.999x+23.448$

• $y=.112x+.999$

• $y=.112x+23.448$

Tags

CCSS.8.EE.C.8C

Priscilla has a piece of rope. She ties a knot in the rope and measures the new length of the rope. She then repeats this process several times. Some of the data collected are listed in the table above. Which equation represents the line of best fit for this data?

• y = −3.3x + 112.1

• y = 112.1x − 3.3

• y = −0.98x + 112.1

• y = 112.1x − 0.96

Tags

CCSS.HSA.CED.A.2

CCSS.HSS.ID.B.6

CCSS.HSS.ID.C.7