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Oct
Unrelated T Test Formula. Sample 1 mean - sample 2 mean SE of differences between sample means. The independent-samples t test is what we refer to as a robust test. Which is simply the signed distance from the value x to the mean of the population with unit. Look at the column labeled Sig under the heading Levenes Test for Equality of Variances.
B independent-means t-test also known as an independent measures t-test. µ 1 µ 2 the two population means are not equal OR. T degress of freedom the t statistic p p value. For a one sample T test DOF is the number of values in sequence 1 minus one. Its the context you provide when reporting the result that tells the reader which type of t -test was used. X 1 x 2 s p 1n 1 1n 2 where x 1 and x 2 are the sample means n 1 and n 2 are the sample sizes and where s p is calculated as.
Revised on December 14 2020.
Once t-test statistic value is determined you have to read in t-test table the critical value of Students t distribution corresponding to the significance level alpha of your choice 5. Which is simply the signed distance from the value x to the mean of the population with unit. There are two versions of the t-test. It is used in studies that have an independent groups design where the data meets the requirements for a parametric test level of measurement is interval or better data is drawn from a population that has. µ 1 µ 2 the two population means are equal H1. Published on January 31 2020 by Rebecca Bevans.