Statistics Reveal Coursebook

What does a range of zero tell about a data set?

• There is no variation in the data.

• There is little variation in the data.

• The lower extreme is zero.

• The mode is zero.

What is the mode in this set of numbers:
7, 14, 20, 3, 7, 14, 2, 14, 7

• 7
• 20
• 7 & 14
• none of the above

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5
• 6
• 9
• 11

Based on the data, about how many students could be predicted to choose math as their favorite subject out of 350 students?

• 25

• 52

• 168

• 260

Which number is NOT the mean, median, mode, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?

• 3

• 6

• 7

• 11

What is the mode of the dot plot?

• 8
• 9
• 1
• 2

What is the range of the dot plot?

• 9
• 5
• 4
• 6

Which class had more variation on their Algebra test scores?

• Class 1

• Class 2

• Not enough information

• Can't tell

Carlos wants to know the favorite sport of people at his school so he asks his baseball team.

• Biased
• Unbiased

A public library asked every 10th person who entered to name the type of book they were getting

• Biased
• Unbiased