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Key Concepts Quiz 4.4
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1

Bruce did a survey of the price of a particular model of calculator in several stores. The results are shown. Find the mean of the prices.
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Mean of a Data Set Worked Example (28.0K)
A)170
B)130
C)127.50
D)120
2

Find the median of the data from question 1.
Median of a Data Set Worked Example (29.0K)
A)170
B)130
C)127.50
D)120
3

Find the mode of the data from question 1.
Mode of a Data Set Worked Example (19.0K)
A)170
B)130
C)127.50
D)120
4

Find the outlier in these data.
Outliers of a Data Set Worked Example (19.0K)
A)170
B)130
C)120
D)There is no outlier.
5

Bruce later discovered that the outlier was an error, and should have been $145. What effect does this have on the mean, median, and mode?
Effect of an Outlier Worked Example (20.0K)
A)Mean: lowered
Median: no effect
Mode: lowered
B)Mean: lowered
Median: no effect
Mode: no effect
C)Mean: no effect
Median: lowered
Mode: no effect
D)Mean: raised
Median: no effect
Mode: no effect





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