AP Stats: Identifying Shapes of Distributions

This figure shows a distribution in the form of a histogram. This distribution has which of the following characteristics? (Don't worry if you can't read the numbers in this graph... just look at the shape of the distribution.)

• Approximate symmetry

• Skewness

• Cluster

• Gap

• Outlier

The distribution shown in this histogram is: (Don't worry if you can't read the numbers in this graph... just look at the shape of the distribution.)

• Multi-modal

• Uniform

• Symmetric

• Right-skewed

• Left-skewed

The distribution in this histogram has which of the following characteristics? (Don't worry if you can't read the numbers in this graph... just look at the shape of the distribution.)

I. Symmetry

II. Gaps

III. Outliers

• I only

• II only

• I and II

• II and III

• I, II, and III

This dot plot shows a U-shaped distribution with which of the following characteristics?

I. two modes

II. outliers

III. gaps

• I only

• II only

• I and II

• I and III

• I, II, and III

A symmetric distribution can't have which of the following characteristics?

• Gaps

• Outliers

• A long tail on one side

• A long tail on both ides

• More than one mode

Which of the following distribution shapes shows clusters?

(cluster - a tall bar with lower bars on both sides)

• 
• 
• 
• 
• 

What is the shape of this distribution, and is it approximately symmetric?

• Mound-shaped, yes

• Approximately uniform, yes

• Uniform, no

• Skewed, no

• Approximately, uniform, no

Locate the mode(s) in this distribution. Is this distribution symmetrical, skewed left, or skewed right?

• 54 and 60, skewed left

• 54, 46, and 38 skewed left

• 54, 46, and 38, skewed right

• 54, skewed left

• 54, skewed right

This back-to-back plot compares the numbers of home runs for baseball teams in the American League versus the National League at midseason, 1999.

True or False: Among the numbers of home runs made by National League teams, the greatest frequency is in the 90s; overall (considering both leagues), the greatest frequency is in the 80s.

• True

• False

This back-to-back plot compares the numbers of home runs for baseball teams in the American League versus the National League at midseason, 1999.

How many fewer home runs did the team with the fewest home runs in the American League have than the team with the fewest home runs in the National League? How many more home runs did the highest hitter of home runs American League team have than the highest hitter of home runs in National League team?

• 2, 798

• 4, 25

• 14, 33

• 4, 33

• 14, 35