Exercise

# The unsystematic variance for the repeated measures design

Now you can easily calculate the unsystematic variance for the repeated measures design, also called *the error term*.

Instructions

**100 XP**

- Calculate the
*unsystematic sum of squares*for the repeated measures design`ss_rm`

. This is just the unsystematic sum of squares of the between-groups design reduced by the stable subjects sum of squares. - Calculate the
*error term*(the mean squares) of the repeated measures design`ms_rm`

. You first have to define the degrees of freedom`df`

.