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Mean/Median/Mode Test

To find the mean, sum the numbers and divide by the number of numbers in the group. To find the median, we arrange the numbers from least to greatest, then choose the middle number (odd number of numbers) or the average of the two middle numbers (even number of numbers). The mode is the number(s) that occurs most often.

Test Objectives:

•Demonstrate the ability to find the mean (average) for a group of numbers

•Demonstrate the ability to find the median for a group of numbers

•Demonstrate the ability to find the mode for a group of numbers

Finding the Mean, Median, & Mode Test:

#1:

Instructions: Find the mean.

a) 34, -7, 21, 8

b) 5, 14, 25, -11, -20, 47

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#2:

Instructions: Find the mean.

a) 31, -72, 100, 512, -10

b) 71, 80, 83, 90, 51, -300

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#3:

Instructions: Find the median.

a) 88, 20, -4, 29, 17, 103

b) 14, 18, 150, 121, -11, -20, 54

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#4:

Instructions: Find the median.

a) 22, 23, 28, 29, 71, 15

b) -2, -7, 14, -9

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#5:

Instructions: Find the mode.

a) 2, -4, 7, 3, 2, 5, 7, 2, 18

b) 24, 17, 21, -7, 17, 12, 24, 13

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Written Solutions:

#1:

Solution:

a) 14

b) 10

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#2:

Solution:

a) 112.2

b) 12.5

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#3:

Solution:

a) 24.5

b) 18

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#4:

Solution:

a) 25.5

b) -4.5

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#5:

Solution:

a) 2

b) 24, 17

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