Outlier and Mean

The data in the table represents the ages of several people in a class. What effect does Mr. Smith’s age have on the data set?

• Mr. Smith’s age increases the mode of the data.

• Mr. Smith’s age decreases the mean of the data.

• Mr. Smith’s age increases the mean of the data.

• Mr. Smith’s age increases the median of the data.

Gabriella’s quiz grades are 88, 92, 92, 96, 98. Gabriella scored a 20 on her sixth quiz. What effect does this score have?

• The low score causes the median to increase.

• The low score causes the median to decrease.

• The low score causes the mean to increase.

• The low score causes the mean to decrease.

A(n) ____ of a data set is much greater or much less than the other data values.

• mean

• median

• mode

• outlier

By how much will the mean vary if the outlier is included?

79, 69, 81, 73, 38, 86, 68

• 70.6

• 5.9

• 76

• 5.4

By how much will the mean vary if the outlier is included?

88, 78, 90, 82, 46, 95, 77

• 5.6

• 6.1

• 85

• 79.4

By how much will the mean vary if the outlier is included?

75, 65, 77, 69, 34, 82, 64

• 5.4

• 72

• 66.6

• 5.9

By how much will the mean weights vary if the outlier is included?

84, 74, 86, 78, 40, 91, 73

• 6.4

• 75.1

• 5.9

• 81

The price of a cheese pizza in five different pizza delivery shops are 5, 5, 4, 6, 6, 8, and $7. Find the mean price of a cheese pizza.

• $7

• $4

• $5

• $6