What are some of the available commands that can be utilized

What are some of the available commands that can be utilized in R for carrying out a one-sample and two-sample t-test? What are the differences between carrying out a t-test with equal and unequal variance?

Solution

The t.test() R function can be used to perform both one and two sample t-tests.

Differences between carrying out a t-test with equal and unequal variance, In equal variance t-test data sets are taken from same set of distributions whereas for unequal variance the data sets are taken from different sets of distribution which are not linked any how. It is not recommended to use unequal variance if data set size is more than 30.