T Test For Two Samples. The two sample t test also known as the independent samples t test is a method used to test whether the unknown population means of two groups are equal or not. So pause the video and conduct the two sample t test here to see whether there s evidence that the sizes of tomato plants differ between the fields.
Two sample t test for equal means the data may either be paired or not paired. Equal variances yields somewhat simpler. Assumptions of two sample t hypothesis test the sample should be randomly selected from the two population.
The variances of the two samples may be assumed to be equal or unequal.
Gather the sample data. So like always let s first construct our null hypothesis. The default null hypothesis for a 2 sample t test is that the two groups are equal. Gather the sample data.
