T-Test
The T-test is used for testing the hypothesis when sample size is small and effects the population on testing. This test compares the means of two variables & it’s difference in significance.
The test statistic ‘t’ is a random variable having the t-distribution with n-1 degree of freedom.
So also got to know that when we’ve to go for the t-test?
When choosing a t-test we’ll look into the two criteria
Two types of T test’s Paired Sample tests,
- To test the difference in specific direction
- The groups being differentiated come from same or different populations.
The Null hypothesis assumes that no significant difference exists between the two groups that is being compared and the main difference between two groups equals to zero.