No. | Pretest | Posttest | difference |
1 | 65 | 71 | 6 |
2 | 86 | 88 | 2 |
3 | 75 | 82 | 7 |
4 | 40 | 43 | 3 |
5 | 105 | 105 | 0 |
6 | 69 | 66 | −3 |
7 | 47 | 49 | 2 |
8 | 96 | 94 | −2 |
9 | 83 | 86 | 3 |
10 | 62 | 73 | 11 |
11 | 81 | 79 | −2 |
12 | 55 | 59 | 4 |
13 | 59 | 63 | 4 |
14 | 98 | 96 | −2 |
15 | 96 | 98 | 2 |
16 | 68 | 70 | 2 |
17 | 92 | 92 | 0 |
18 | 65 | 72 | 7 |
19 | 90 | 89 | −1 |
20 | 54 | 58 | 4 |
21 | 44 | 46 | 2 |
22 | 65 | 70 | 5 |
23 | 82 | 82 | 0 |
24 | 86 | 80 | −6 |
25 | 62 | 68 | 6 |
26 | 56 | 60 | 4 |
27 | 62 | 65 | 3 |
28 | 54 | 60 | 6 |
Average | 71.32 | 73.71 | 2.39 |
St. deviation | 17.85 | 16.20 | 3.65 |