###### Asked in Math and Arithmetic

Math and Arithmetic

# How can you calculate mean value?

## Answer

###### Wiki User

###### June 01, 2009 1:53AM

Add all numbers and divide it by the amount of numbers. E.g. Calculate the mean: 12, 22, 10, 30 12+22+10+30=74 74/4=18,5 mean=18,5

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A z-value can be used to calculate probabilities of observing a
result that is at least as far from the mean. That probability
measure can be used to calculate the level of confidence but you
need to be careful about using the one-tailed or two-tailed
measures - as appropriate.
A z-value by itself, has nothing to do with level of
confidence.
A z-value can be used to calculate probabilities of observing a
result that is at least as far from the mean. That probability
measure can be used to calculate the level of confidence but you
need to be careful about using the one-tailed or two-tailed
measures - as appropriate.
A z-value by itself, has nothing to do with level of
confidence.
A z-value can be used to calculate probabilities of observing a
result that is at least as far from the mean. That probability
measure can be used to calculate the level of confidence but you
need to be careful about using the one-tailed or two-tailed
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