Part 1D: Check your understanding: Exploring Example Data

Use the above Racer App1 to check your understanding

Name (if more than one name, separate each name with a comma)

Instructor's Email Address

Enter the PlayerID you used to play the game

A. Use the settings shown to the left of the Racer App1. What is the mean Finish Time for Classic cars?
13.49 8.52 12.34 14.28
B. Which car appears to have a higher median value?
Classic Cruiser Unable to tell from the graph
C. Change the x-axis on the graph comparing Finish Time to the Order (whether the car was raced 1st or 2nd). Notice that the graph and summary statistics (mean and standard deviation) do not change. What conclusions can we make from this data? Check all that are appropriate. In the Racer tutorial, all cars were raced in the same order.
We can conclude that the Classic car is faster. We can conclude that the Cruiser car is faster. We can conclude that there is no difference between the Finish Time of these two cars. The order in which the cars were raced could impact the finish time.
D. Part of the goal of this lab is to determine whether there really is a difference in the car speeds. What do you think? Which car would you pick if you wanted to get the fastest finish time?
We can conclude that the Cruiser car is faster. We can conclude that the Classic car is faster. The differences in Finish Times are likely just due to random chance. More information is needed before we can make a conclusion.
E. Change the x-axis on the graph comparing Finish Time to the PlayerID. If you had to pick a player that you believe would take the longest to finish the game, who would that be?
a c p s
F. If the following players were going to race against each other, who would you predict to win?
c e p s
G. Change the X Variable to Player ID, then remove the two players who took the longest to complete the races. What is the mean Finish Time for Classic cars if we remove the two slowest players?
12.03 12.78 13.37 16.23