Table of Contents
What is Student’s t-Test?
The Student’s t-test is a statistical tool used to determine whether the means of two groups are statistically different from each other. The test is based on the t-distribution, which is a probability distribution that is used to calculate the likelihood of obtaining a certain t-value given a certain level of confidence. The Student’s t-test is used to compare the means of two independent groups..
What Type of Student t-Test Should I Use?
If you want to know whether the means of two groups are different from each other, you should use a two-sample t-test.
One-Sample, Two-Sample, or Paired t-Test?
A paired t-test is used to compare the means of two related samples.
Student t-Test Formula
The student t-test formula is a statistical tool used to measure the difference between the means of two groups of data. The formula is:
t = (x 1 – x 2 ) / (s 1 2 / n 1 )
where:
t is the student t-test statistic
x 1 is the mean of the first group of data
x 2 is the mean of the second group of data
s 1 is the standard deviation of the first group of data
n 1 is the sample size of the first group of data
s 2 is the standard deviation of the second group of data
n 2 is the sample size of the second group of data
Uses of Student t-Test
Student’s t-test is a tool used to measure the difference between two population means. It is a parametric test that uses the standard deviation of the two populations to calculate the degrees of freedom. The test statistic is a t-value, which is compared to a t-distribution to determine whether the difference between the population means is statistically significant. The test can be used to compare the means of two groups, or to compare the mean of one group before and after a treatment. It is also used to test the equality of two population means.
