Statistics Review

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

What was the most popular party type?

• Bowling

• Skating

• Dancing

• Total

What is the type of correlation for the following scatter plot?

• Negative 

• None

• Positive 

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

Find the median of the following set of numbers: 12, 7, 9, 13, 8.

• 9

• 10

• 8

• 12

What is the median of the data set 3, 7, 9, 12, and 14?

• 7

• 9

• 10

• 12

A graph shows the number of hours spent studying on the x-axis and the test scores on the y-axis. If the graph shows a line that slopes upwards as it moves from left to right, what does this indicate?

• As study time decreases, test scores increase.

• As study time increases, test scores decrease.

• As study time increases, test scores increase.

• There is no relationship between study time and test scores.

What is the equation of the line of best fit?

• y= 6x + 2

• y = -2x +6

Which scatter plot shows a linear relationship between x and y?

• Graph A

• Graph B

• Graph C

• Graph D