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how to find mean using formula. Add up all the numbers then divide by how many numbers there are. For grouped data obtain the mid-value of each intervals.
The Z Score Formula For Standard Bell Curves P Value Standard Deviation Statistics Math from www.pinterest.com
Arithmetic Mean is calculated using the formula given below. And then divide the SUM by COUNT of employee to calculate mean of productivity. Arithmetic Mean 3 3 4 9 6 18 7 12 9 3 45.
In the case of a sample the formula for z-test statistics of value is calculated by deducting sample mean from the x-value.
Standard deviation is a measure of how much the data in a set varies from the meanThe larger the value of standard deviation the more the data in the set varies from the mean. Select AVERAGE from the Statistical category and click OK. Mathematically it is represented as Z x x_mean s. If you want the Median select MEDIAN.
