Practice Questions

1.Using the data table above to answer the following questions:

1a.State the name of the independent variable

Age

1b. State the name of the dependent variable

Reaction time

1c. State the units of reaction time in the data table or graph

Seconds

2. What was the reaction time of a 20-year-old?

0.17 seconds

3.Which participant had the fastest reaction time?

Either the 18 or 20 year old at 0.17 seconds.

4.Estimate the reaction time at age 45

0.20 seconds

5. Describe the trend shown

As age increases reaction time will decrease and then increase.