Ch. 1 quiz review: STATS

Ch. 1 quiz review: STATISTICS

Graphs(Bar and Pie), Histograms and shapes, Stem and Leaf plots, Box plots w/outliers, Standard deviations, Means, Modes

Multiple Choice

Given a variance of 64, what is the standard deviation?

• 8

• 4096

• 0

• 6.8

Multiple Choice

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 increase.

• The mean will increase

• Quartile 1 will increase.

Multiple Choice

What is the interquartile range (IQR)?

• 20

• 25

• 30

• 50

Multiple Choice

What is the median of the scores?

• 21

• 16

• 17

• 19

Multiple Choice

How many students are between 48 and 59 inches tall?

• 19

• 14

• 15

• 16

Multiple Choice

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

• SKEWED LEFT

• SKEWED RIGHT

• UNIFORM

• SYMMETRICAL

Multiple Choice

What is the shape of the distribution?

• Skewed Left 
• Skewed Right
• Symmetric
• Bimodal

Multiple Choice

What percent of people picked hockey?

• 16%

• 23%

• 26%

• 13%

Multiple Choice

60 people were surveyed. How many liked red?

• 25

• 10

• 30

• 15

Multiple Choice

The following numbers are in a data set: The mean =30.71

32, 26, 30, 28, 34, 32, 33

Which number below would increase the standard deviation?

• 5

• 30

• 31

• 32