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Finding the mean. of a set of numbers. A mean. is one of three types of average. The others are the median and the mode. The mean is the sum of the values divided by the number of values. Here is a set of 6 numbers 10 3 11 8 15 13.

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finding the mean

Finding the mean

of a set of numbers

a mean
A mean
  • is one of three types of average.
  • The others are the median and the mode.
  • The mean is the sum of the values divided by the number of values.
to find the mean we add the numbers and divide by 6
To find the mean we add the numbers and divide by 6.

10

+

3

+

11

+

8

+

15

+

13

=

60

The mean is 10

60

6

=

10

the mean of the new numbers increases by 5
The mean of the new numbers increases by 5.

15

+

8

+

16

+

13

+

20

+

18

=

90

The mean is 15

15

90

6

=

if we replace 13 by 613
If we replace 13 by 613.

10

3

11

8

15

613

13

The mean becomes 110.