Finding an Average

Take 3-5 measurements and fill in the data tables.
1. Measure and record the time it takes a car to travel down the first hill on a gravity ride.
Data Table One
Time for Cars to Travel down First Hill:

	Watching from Sidelines					On the Ride
Trials	1	2	3	4	5	1	2	3	4	5
Grizzly
Demon
Psycho Mouse
Whitewater Falls
Runaway Reptar

2. Calculate the average time for the car to travel down the first hill for each ride.

	Sum of times watching	Average	Sum of times riding	Average
Grizzly
Demon
Psycho Mouse
Whitewater Falls
Runaway Reptar

3. Count and record the number of people who can get on one run of a ride.

Data Table Two
Number of People on one run of a Ride

	Number of people per ride					Number of people per car
Trials	1	2	3	4	5	1	2	3	4	5
Grizzly
Demon
Psycho Mouse
Whitewater Falls
Runaway Reptar

4. Calculate the average number of people who can get on one run of a ride.

	Sum per Ride	Average	Sum per Car	Average
Grizzly
Demon
Psycho Mouse
Whitewater Falls
Runaway Reptar

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Updated 1/28/2012