# Statdisk Notes for Activity 9

The following examples assume the brands of paper towels are "bounty", "northern",
"brawny", and "scott". Adjust the instructions to fit your data if necessary.

## Entering the Data into Statdisk

- Label columns with the names of the brand of paper towels.
- Enter the diameters in the columns, each brand gets it's own column

## Generating the One-Way Analysis of Variance (Question 3)

- Choose Analysis / One-Way Analysis of Variance
- Select columns 1 through 4 to use
- Click Evaluate

Use the results of the ANOVA table to answer questions 4 and 5 and 6.

## Finding the Critical F value (Question 6)

Statdisk will give you the critical F value when you run the one-way ANOVA. However, you can also find it this way.

- Choose Analysis / Probability Distributions / F
- Enter the numerator df and the denominator df. These come from the ANOVA table.
- Enter the significance level α into the area to the right of the F value box.
- Click Evaluate.