Chapters 7-8 Key Points and JMP Instructions

Example 1: Comparing Two Sample Means

Means are different at the = .05 level

Example 2: Comparing Two Sample Means with Paired Data (Matched Pairs)

The mean difference between the pairs is not equal to zero at the = .05 level

Example 3: Comparing Two Sample Proportions

Proportions not different at the = .05 level (p-values)

Example 4: Comparing Two Sample Standard Deviations (or Variances)

Std devs are NOT different at = .05 level

Example 5: Comparing 3 or More Means (ANOVA)

Proportions not different at = .05 level (p-value)