T Test Statistikk. You can compare the means of two groups with a two sample t test. T t statistic m mean of the group ยต theoretical value or population mean s standard deviation of the group n group size or sample size.
It is often used in hypothesis testing to determine whether a process or treatment actually has an effect on the population of interest or whether two groups are different from one another. The next time you have a cold you buy an over the counter pharmaceutical and the cold lasts a week. To determine whether the difference is statistically significant t he t test.
You can compare the means of two groups with a two sample t test.
Your cold lasts a couple of days. The t test is any statistical hypothesis test in which the test statistic follows a student s t distribution under the null hypothesis. Published on january 31 2020 by rebecca bevans. In other words it lets you know if those differences measured in means could have happened by chance.
