Scatter Plots Best Line of Fit Linear Review

Mrs. Collins made a scatterplot to show the relationship between the number of absences and a student’s final exam score. Based on this scatterplot, a student with 6 absences should get approximately what score on the final exam?

• 65

• 92

• 70

• 76

identify the outlier

• 30, 100

• 100, 30

• there is no outlier

the slope is -5/7, what does that mean?

• gain 5 hour of sleep for 7 cups of coffee

• lose 5 hours of sleep for 7 cups of coffee

• lose 7 cups of coffee for 5 hours of sleep

• lose 5 cups of coffee for 7 hours of sleep

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase. 

• As the temperature increases, the number of visitors increases. 

• As the visitors increase, the temperature decreases. 

• No correlation

Looking at the graph, what is the correlation between the x and y variables?

• y increases as x increases

• y is constant

• y decreases as x descreases

• y decreases as x increases

Is this line an accurate line estimate of best fit for the data?

• Yes

• No

What is the equation of the line of best fit?

• y= 2x

• y=3x+7

What would be the slope for the line of best fit?

• 1

• 25

• -1

• -25

Does this have a linear association?

• Yes

• No

What would the slope be for the line of best fit?

• -127

• .09

• 1

• -1