1. The manipulation of the variable is best undertaken via an experiment.

2. An unintended and uncontrolled manipulation of the independent variable is referred to as a

3.Judging whether our findings are meaningful is referred to as testing for statistical .

4.We evaluate whether two variable are related by analysing whether they are with each other.

5. By rank ordering the data that we have collected, and identifying the score which falls at the midpoint, we can derive the