STAT 200 Chapter 12 Inference for One-Way Analysis of Variance

One-Way Analysis of Variance (Section 12.1)

Objective: to compare the means of three or more independent populations

Examples:

   Comparison of mean annual income among 4 populations: university graduates

    who have a major in computer science, civil engineering, statistics and actuarial

    science.

   Comparison of the mean reduction in blood pressure in hypertensive patients

    randomized to three dierent treatment groups: antihypertensive drug A, B and

    C.

Analysis of Variance (ANOVA) is a statistical method that tests the equality of three

or more population means by analyzing sample variances or variation in the data.

When there is only one...