why is it useful to test for normality with small samples? what is the importance of a confidence interval in an effect size test why do we need confidence intervals for normality testing? what is the purpose of confidence intervals in normality testing why is the confidence interval used for an effect of normality test which test is needed to assess a measurement of normality? what is the best single index of the degree to which the data violates normality? what is the best index for the degree to which the data violates normality why is the confidence interval important for an effect size what is the confidence interval for an effect size? how do you tell the difference between a small sample and a large sample? what is the confidence interval of a normality test is the confidence interval useful in estimating the size of the study? why is the confidence interval in effect sizes used? how can you measure the magnitude of a violation on the basis of confidence intervals why is a confidence interval important which of the following measures is useful in terms of interpreting the normality test?? why are confidence intervals useful does a large sample need to be a significance test for a particular data set? how to test for a violation of normality