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how to calculate the sample mean in excel. We use the following formula to calculate a confidence interval for a mean. After the data have been entered place the cursor where you wish to have the mean average appear and click the mouse button.
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We can see that the first sample had a mean of 7563684 the second sample had a. There is no built-in function that directly computes for the standard error of mean. Next you need to find the variance of the data or the mean square of their difference from the mean.
Once youve found this number take its square root.
For example to calculate the mean of numbers 1 2 2 3 4 6 you add them up and then divide the sum by 6 which yields 3. Next you need to find the variance of the data or the mean square of their difference from the mean. The mean is calculated by adding up a group of numbers and then dividing the sum by the count of those numbers. The Confidence level is 95 and the Margin of Error also consider as 85.
