Yamanes Formula For Calculating Sample Size. A sample of any given size provides more information about a smaller population than a larger one so theres a correction through which the number given by Cochrans formula can be reduced if. N signifies the sample size.
N n 1 N e 2 Where n Desired sample size N Population of the study e precision of sampling error 005 Ralph Holleran. A 95 confidence level andP5are assumed for Equation 5. Nfrac 1000 11000005005 286 n 110000050051000.
N N 1 Ne2.
The survey therefore needs to include 286 employees. The Sample Size calculator will calculate the sample size using Taro Yamane. First of all you should be working with a finite population and if the population size is known the Yamane formula for determining the sample size is given by. Therefore the sample size can be calculated using the formula as 10000 196 2 051-05005 2 10000 1196 2 051-05005 2 Therefore 370 customers will be adequate for deriving meaningful inference.