Shape, Center, and Spread Basics

Last year, students at NGMS gathered data on how many pages are in fiction books in their library. Which statement is true about the distribution?

• The distribution is perfectly symmetrical

• Most of the books have over 400 pages

• There is a large cluster of books that have between 150-400 pages.

• There is a cluster of data between 400 and 1000 pages

What measure of central tendency (mean, median or mode) would be best for the following set of data?

• Mode, because it is the one that shows up the most.

• Median, because there is an outlier.

• Mean, because there is not an outlier.

• There is not a best measure of central tendency for this data.

Which of the following is true about the shape and spread of the data distribution in the histogram above?

• Uniform with a range of 89

• Uniform with a range of 75

• Symmetric with a range of 75

• Symmetric with a range of 84

What is the shape of the distribution?

• Skewed Left

• Skewed Right

• Unimodal

• Bimodal

• Multimodal

Which is a true statement based on the box plots above

• The data for Team B have the greater range.

• The data for Team A are more symmetric.

• The data for Team B have the greater interquartile range.

• The data for Team A have the greater median.

Which is a true statement based on the dot plots above?

• Set B has the greater range

• Set B has the greater median

• Set B is skewed left

• Set A is less symmetric that Set B

Which dot plot has the greatest variability?

• A

• B

• C

• D

What conclusion can Ms. Long make about the performance of her first- and second-period classes?

• The first-period class had a higher median score than the second-period class.

• Both graphs are uniform with one peak.

• The first-period class scores had a greater range than the second-period class scores.

• Both classes have the same range.

Which value(s) are outlier(s) for the age of male Oscar winners?

• 80

• 76

• 60

• 29

Describe the peak of the distribution.

• There is no peak of the distribution.

• This graph is unimodal.

• This graph is bimodal.

• This graph is multimodal.