EDUR 8131: ANOVA Homework

EDUR 8131

ANOVA Exercise

Instructions:

Present results using the table format found in the notes entitled "Reporting Statistical Outcomes." Do not include SPSS output; present only results tables and written comments on results.

(1) Does the number of suspensions per school vary by administrative policy? The total number of suspensions for each school is recorded. In addition, schools are classified into one of three types depending upon the policy used to govern how suspensions will be with handled. The three types are simply labeled as A, B, or C.

School ID	Number of Suspensions per Year	Policy Type used in School
1	52	A
2	76	B
3	11	C
4	82	B
5	65	A
6	25	C
7	34	B
8	43	C
9	73	A
10	22	C
11	99	B
12	18	C
13	34	A
14	33	C
15	53	A
16	120	B
17	43	A
18	76	B

(2) Does testing frequency have any effect upon student achievement? An experiment was conducted in which students in three classes were given tests either daily (D), every second day (2D), or weekly (W). Achievement scores for each student are recorded based upon a final test (scores range from a low of 1 to 100).

Student ID	Score on Final Test	Frequency of Testing
1	100	D
2	65	2D
3	85	2D
4	86	D
5	68	W
6	93	D
7	90	W
8	90	2D
9	77	D
10	83	W
11	95	D
12	75	2D
13	96	D
14	79	W
15	98	D
16	81	2D
17	75	W
18	78	2D

(3) A researcher is interested in learning whether frequency of reading at home to elementary-aged children produces differential effects on reading achievement. After obtaining information from a randomly selected sample of parents about this behavior, the following classifications and standardized achievement scores were recorded. (Note: frequency classifications as follows: a = less than once per month, b = once to three times per month, c = more than three times per month.)

a: 48, 47, 37, 65, 51, 71, 33, 50, 29

b: 51, 59, 77, 49, 73, 39, 67, 44, 76, 81, 52, 44, 26

c: 81, 55, 89, 66, 39, 67, 75, 77, 59, 49, 86, 77, 81, 61, 66