Part 2: ANOVA

Let's take hypothetical data presenting blood pressure and high fat intake (less than 3 grams of total fat per serving) or low fat intake (less than 1 gram of saturated fat) of an individual.

Table 2: Blood Pressure and Fat Intake

Individual	Blood Pressure	Fat Intake
1	135	1
2	130	1
3	135	1
4	128	0
5	121	0
6	133	0
7	145	1
8	137	1
9	148	1
10	134	0
11	150	0
12	121	0
13	117	1
14	128	1
15	121	0
16	124	1
17	132	0
18	121	0
19	120	0
20	124	0

First, refer to the following videoon how to calculate a one-way ANOVA using SPSS.

Next, using SPSS:

• Calculate a one-way ANOVA to test the null hypothesis that the mean of each group is the same.
• Use different variables as grouping variables (fat intake high 1; fat intake low 0) and compare the results.
• Calculate an F-test for an overall comparison of means to see whether any differences are significant.