Scatter Plots Correlation Coefficient Residuals

A relationship between data sets is a _______________.

• line

• correlation

• scatter plots

• causation

As the age of the car increases, its value decreases. Which scatterplot represents this relationship?

• A

• B

• C

• D

What is the correlation between length of running start and distance of jump?

• positive:  the further you run the further you jump

• negative: the less you run the less distance of your jump

• positive: the further your running start the less your distance

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books. Use the trend line to predict how many pages would be in a book with 6 chapters. 

• ≅100 pages

• ≅170 pages

• ≅60 pages

• ≅20 pages

Which of the following lines represents the line of best fit for the scatter plot?

• A

• B

• C

• D

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

• Yes

• No

Based on this scatter plot, a student with 6 absences should get approximately what score on the final exam?

• ≅ 58

• ≅ 92

• ≅ 100

• ≅ 76

Write the equation of the trend line.

• y = 0.50x

• y = 0.50x + 30

• y = 0.10x + 30

• y = 10x + 30

What is a trend line that shows the most accurate relationship between x and y and is is very close to most of the data points?

• linear regression

• no correlation

• trend line

• line of best fit

As x increases, y increases

• correlation coefficient

• causation

• positive correlation

• negative correlation