Scatter Plots and Line of Best Fit

Front

What is the type of correlation? Options: Negative, no association, positive

Back

no association

Front

Predict the number of chapters in a book with 140 pages using the trend line from a scatter plot showing the relationship between chapters and pages.

Back

14 chapters

Front

About how many male math teachers were there in 2006? Options: 15, 30, 35, 45

Back

35

Front

Which scatter plot shows a linear relationship between x and y? Options: Graph A, Graph B, Graph C, Graph D

Back

Graph C

Front

Based on a scatterplot showing the relationship between the number of absences and a student’s final exam score, what score should a student with 6 absences get? Options: 85, 92, 70, 76

Back

76

Front

What is a line of best fit used for?

Back

To make predictions

Front

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

Back

Yes

Front

Equation of the line of best fit:

Back

y= -2x + 10

Front

Which line is the best line of best fit? Options: a, b, c, i don't see any lines

Back

b

Front

Shown is a residual plot. Would a linear regression model of the data be most appropriate?

Back

NO