Nipitpholt Sanitlou, Whachareeporn Sartphet and Yada Naphaarrak
คณะบริหารธุรกิจ
Keywords: G * Power program, sample size
Abstract
G * Power program is a free software used to calculate the sample size. Usage includes data entry, test family statistics, statistics test. Specifying Type of power analysis and input parameters consists of size, effect size, influence size value. The estimation of the influence size is defined as three basic values: small, medium and large. The power of the test (Power) calculated from the type II error (type II error Beta) / Beta Power = 1-β) Normality β is 20%, therefore, the power level is 80%. Significant level Alpha / Alpha. Or α, which defaults to 0.05
