18.3– student’s t-test

Question 1

what is the students t-test?

Answer 1

a statistical test used to determine if there is a significant different between the mean values of a particular variable across two populations

Question 2

what are the conditions for using student’s t-test?

Answer 2

1. the data must be continuous and normally distributed
2. the variances of the populations should be equal
3. the samples must be independent of each other

Question 3

what is the null hypothesis?

Answer 3

a hypothesis that states that there is no significance different between X and Y (what’s being investigated)

Question 4

what is the purpose of student’s t-test?

Answer 4

the compare means between two datasets