To find the mean of a set of numbers, such as:
18, 27, 42, 3, 19, 192, 198, 3024, 17, 342
you simply add up all the numbers: 18+27+42+3+19+192+198+3024+27+342=3982
and then you divide your result or sum (3982 in this case) by the number of individual numbers, in this case 10. 3982/10 = 398.2, so 398.2 is your mean in this example.
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Mean = (sum of the n numbers)/n
Mean = Total of the numbers / n So total of the numbers = n*mean
Two numbers are needed to find a mean.
Given a set of numbers, and its mean, we can find the difference between each of the numbers and the mean. If we take the mean of these differences, the result is called the mean deviation of the numbers.
You can not find the mean of TA, TA, 1512, and 2512. To find the mean you have to have numbers. You can find the mean of 1512 and 2512 by adding the numbers together and dividing by two. The answer is 2012.