Histogram Spread and Center

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

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.

What is the shape of the data?

• symmetrical

• skewed left

• skewed right

• uniform

What is the shape of the distribution?

• Skewed Left

• Skewed Right

• Symmetric

• Bimodal

Which of the following best describes the shape of the distribution?

• Skewed left

• Skewed right

• uniform

• symmetrical

Which statement best describes this graph?

• There is a peak at 47.

• There is a cluster around 38-40.

• The mode is 40, 28 and 42

• There is a gap in the data between 39-40.

Where is the gap in the data?

• 17

• 19

• 22

• 26

The ages of nine employees at a company are shown below.
45, 50, 52, 58, 63, 63, 41, 58, 49
The company hires a tenth employee who is 28 years old. What effect does the new employee have on the shape of the data distribution?

• The new employee causes the distribution to become skewed to the right.

• The new employee causes the distribution to be skewed to the left.

• The new employee causes the distribution to become more symmetrical.

• The new employee causes the distribution to become less spread out.

Which statement is INCORRECT?

• The graph for Lucy's Steakhouse is skewed right

• The IQR for Gary's Grill is 10.

• The graph for Gary's Grill is skewed left.

• The Range for Lucy's Steakhouse is 40.