4.2 Critical Symbols: Z and T Scores (4-5)

standard error of the difference (between the means)

null and alternative hypothesis for independent t-test

standard error of the mean difference

dependent t-test

effect size for independent or dependent t-test

independent t-test

mean difference score in a sample

mean difference score in a population

chance of type I error

α

chance of a type II error

β

sample mean

population mean

standard error of the mean (parameter)

standard error of the mean formula (parameter

deviation score

number of subjects per group

n

z score for a score

z score for sample mean

1-sample t test formula

effect size for 1-sample t test

standard error of the mean formula (as an estimate)

Standard Error of the Mean (parameter)

F-test

Chi-squared

standard error of the mean (as an estimate)