Algebra Review #3

What does point C on the box plot represent?

• First Quartile

• Median

• Third Quartile

• Mean

What do points B and D represent on the box plot?

• Mean and Mode

• Mean and Median

• Least and Greatest Value

• First and Third Quartiles

Interquartile Range is

• the difference between the third quartile and the first quartile

• the difference between the greatest and least data values.

Range is

• the difference between the third quartile and the first quartile

• the difference between the greatest and least data values.

How many students were greater than or equal to 60 inches tall?

• 21
• 11
• 17
• 6

What type of association does this graph have?

• positive 
• negative
• none
• all of the above

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

Hector surveyed 500 people and asked them how far they drive to work and what the last digit of their phone number is. He used the results to make a scatter plot.

What type of association should he expect to see in the scatter plot?

• positive association

• negative association

• no association

The data set below has an outlier of 42.
2, 5, 12, 15, 19, 4, 6, 11, 16, 18, 12, 12, 42
What effect does removing the outlier have on the distribution of the data?

• The mean will decrease
• The median will decrease
• The mean will increase
• The median will increase

What type of association is there between the variables shown on this scatter plot?

• Weak, Positive Association
• Strong, Positive Association
• Weak, Negative Association
• No Association