Psych 200

Independent measures ANOVA:

A researcher wants to test whether having a healthy breakfast will help children do better on an exam. To test this, the researcher recruits 60 students. She then randomly assigns each student to either receive a healthy breakfast, an unhealthy breakfast, or no breakfast. Then, she gives each student an exam. The researcher records the participants' scores on the exam. The results are given below. Test whether the type of breakfast (healthy, unhealthy, no breakfast) was associated with differences in exam scores at a .05 level of significance.

Healthy Breakfast	Unhealthy Breakfast	No Breakfast
95	75	81
85	77	85
99	85	64
81	90	73
92	65	82
93	45	90
100	87	66
88	64	71
78	62	68
89	73	89
84	41	87
99	77	78
95	89	80
96	95	91
89	82	66
90	84	77
92	73	74
87	71	81
88	63	83
92	62	75

Answer the questions on the attached sheet.

	Group 1	Group 2	Group 3
	____________________	_____________________	_____________________
Sample Size
Sample Mean
Sample Standard Deviation

Based on the table shown in SPSS, state the following values associated with the difference scores:

SSBetween:

SSWithin:

MSBetween:

MSWithin:

Based on the table shown in SPSS, state the following values associated with the test statistic:

F-obt:

Degrees of freedom:

Significance: