Scatterplots and Trendlines

Front

What type of association does this graph have? Options: positive, negative, none, all of the above

Back

negative

Front

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

Back

Yes

Front

Which sentence describes the relationship shown on this scatter plot?

Options: 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

Back

As the temperature increases, the number of visitors increases.

Front

What is a line of best fit used for?

Back

To make predictions

Front

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

Back

35

Front

Predict the number of chapters in a book with 180 pages using the trend line from a scatter plot showing the relationship between chapters and pages.

Back

18 chapters

Front

Expected ice cream sales if temperature is 90°?

Back

55

Front

Which line represents the line of best fit for the scatter plot? Options: A, B, C, D

Back

B

Front

Select the statement that best describes the line: The line is the line of best fit., The line is NOT a line of best fit because it does not pass through two points., The line is NOT a line of best fit because it does not go through the middle of the data set., The line is NOT a line of best fit because it does not go through the origin.

Back

The line is NOT a line of best fit because it does not go through the middle of the data set.

Front

Is this relation a function?

Back

Function