Chapter 11 Mid Chapter Check

1. Select the definition for mean.

• The value appearing at the center of a sorted version of a list of data, or the mean of the two central values.

• The sum of the data divided by the number of pieces of data.

• The number(s) or item(s) that appear most often in a set of data.

• A question that anticipates and accounts for a variety of answers.

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Determine the mean of the following data set: 22, 18, 38, 6, 24, 18.

• 18

• 20

• 21

• 24

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Choose the word that correctly completes the following sentence:

The _________ is the number or numbers that occur most often in a set of data.

• mean

• median

• mode

• outlier

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Find the mean of the data set: Number of home runs by baseball players in a single season

43, 21, 35, 15, 35

• 15.2

• 31

• 35

• 29.8

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Find the mean of the following data set: Number of different birds spotted

7, 10, 13, 9, 12, 3

• 9.5

• 9

• 10

• 13

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Find the median and mode for the data set: hours spent studying

4, 2, 5, 7, 1

• median: 5

  mode: 7

• median: 5

  mode: none

• median: 4

  mode: 1

• median: 4

  mode: none

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Find the median and mode for the set of data: heights of buildings in feet

35, 42, 40, 25, 42, 54, 50

• median: 42

  mode: 42

• median: 25

  mode: 42

• median: 54

  mode: 25

• median: 25

  mode: 54

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The table shows the number of minutes spent doing different exercises. The mean time spent exercising was 18.2 minutes. How many minutes were spent doing sit-ups?

• 8

• 10

• 18.2

• 15

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Use the table that shows the lengths of different lizards. Find and compare the median and mode of the data.

• median: 14.5

  mode: 14

  The median is 0.5 cm larger than the mode.

• median: 30

  mode: 12 and 19

  The median is much larger than the modes.

• median: 14.5

  mode: 12 and 19

  The median is in between the modes.

• median: 30

  mode: 14

  The median is 16 cm larger than the mode.

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