Statistics and Data Review

Based on the graph, which statement ending would best supports the association?

"As the area of a garden increases, _____________________."

• The number of plants decreases.

• The number of plants stays the same

• The number of plants increases faster.

• The number of plants increases.

Calculate the mean for Valley High School to the nearest tenth

• 22

• 22.44

• 22.4

• 22.5

Calculate the mean for Young High School to the nearest tenth

• 22.88

• 28

• 28.2

• 22.8

What is the interquartile range of the data?

• 8

• 9

• 13

• 21

Consider the data values 24, 18, 3, 19, 23, 26, 25, and 25. Which data value is an outlier?

• 3

• 24

• 19

• 25

What is the type of correlation?

• Negative 

• no association

• positive 

What type of correlation does this graph have?

• positive 

• negative

• none

• all of the above

You are analyzing a scatter plot that has a negative correlation. What is true of the of the x and y values?

• As x increases, y decreases

• As x increases, y increases

• As x decreases, y decreases

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 chapters would be in a book with 180 pages. 

• 12 chapters

• 15 chapters

• 18 chapters

• 21 chapters

About how many male math teachers were there in 2006?

• 15

• 30

• 35

• 45