TOPIC #10: Tests for mean, Z- test and t-tests

Module 4 DATA1001

When would you use the t-test?

When you don’t know the population standard deviation and the sample size is small

When would you use the z-test?

When the population standard deviation is known and there is a large sample size.

what is the one sample t-test?

allows investigation of the mean of a variable to a specified amount - aim is to test a claim

what is the two sample t-test

allows investigation of the mean of a variable to another sample’s mean