Minitab Notes for Activity 3
Creating the Worksheet
You will be entering your own information for this activity.
- Label five empty columns as "game", "first roll", "initial result", "final
result", "rolls". You're free to call them something else, but you'll need
to adjust the instructions accordingly.
- Enter the data into the worksheet.
- Go File / Save Project As
- Move through the filesystem to R:
- Change to your section number
- Change to the act03 folder
- Type a name that is unique to your group
- Click OK
From now on, when you need to work with the project, open the one for your
group.
Creating Marginal Distributions (Questions 3, 4, and 5)
Although a number, the first roll is actually a categorical variable as it
doesn't make any sense to compare a roll of 4 with a roll of 9. The results
are also categorical variables.
- Choose Stat / Tables / Tally Individual Variables
- Select the "first roll", "initial result", and "final result" variables.
- Check the box beside Percents so that both Counts and Percents are
displayed.
- Click OK
Summarizing the Data (Question 6)
Descriptive Statistics
- Choose Stat / Basic Statistics / Display Descriptive Statistics
- Double click on the variable "rolls"
- Click on Statistics and check the boxes you need: sum, mean, median, variance,
and standard deviation
- Click OK
Graphical Summary
- Choose Stat / Basic Statistics / Graphical Summary
- Select "rolls" for the variable to display
- Click OK
Use the histogram from the graphical summary screen to talk about the shape
of the distribution.