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Finding the Missing Data Point Using Mean

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Find the value of x.

1.

x, 15, 13

Mean = 12

x =

2.

11, 20, x, 7

Mean = 14

x =

3.

19, x, 4, 12, 4

Mean = 11

x =

4.

4, x, 19

Mean = 10

x =

5.

8, 6, x, 5

Mean = 5

x =

6.

18, 17, 15, x, 16

Mean = 16

x =

7.

x, 2, 11, 1

Mean = 5

x =

8.

13, 5, x

Mean = 10

x =

9.

40, x, 39, 44, 40

Mean = 40

x =

10.

12, x, 6, 3

Mean = 7

x =

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