## Exercise 3: Trying out a T-Test

### 1. Getting Started

In this exercise we will use the **Independent Samples
T-test.**

Create a new boxplot using **BODYFAT** as the variable of
interest and comparing the two age-groups, rather than ADIPOSITY
as in the previous exercise. Do you think there is a difference
between the two groups?

We can perform a statistical test to see if there is a
â€˜significantâ€™ difference between the means of the groups. The
appropriate test for this analysis is the **Independent samples
t-test**. This is useful for comparing two groups which do not
share any members. In this case, nobody under 40 is also over 40.