Measures of Central Tendency
... Calculating the Sample Variance Suppose your data are 1,2,3,4,5. You can first calculate the mean, and use the sum of squared deviations, or you can use the computational formula. Both methods are illustrated on the following slides. ...
... Calculating the Sample Variance Suppose your data are 1,2,3,4,5. You can first calculate the mean, and use the sum of squared deviations, or you can use the computational formula. Both methods are illustrated on the following slides. ...
216 Chap 7 Probability and Samples
... sample size (n) is sufficiently large (> ~30) The mean of the sampling distribution will equal the mean of the population (µ) The standard deviation of the sampling distribution (the standard error of the mean) will equal the standard deviation of the population (σ) divided by the √ n ...
... sample size (n) is sufficiently large (> ~30) The mean of the sampling distribution will equal the mean of the population (µ) The standard deviation of the sampling distribution (the standard error of the mean) will equal the standard deviation of the population (σ) divided by the √ n ...
