What is the pretest and posttest performance of the
learners for both experimental and control group?
Please help me.
Homework Answers
The data for the experimental group is;
| Pretest | Posttest |
| 9 | 18 |
| 5 | 18 |
| 8 | 14 |
| 7 | 16 |
| 5 | 12 |
| 8 | 18 |
| 7 | 15 |
| 8 | 13 |
| 9 | 19 |
| 8 | 18 |
| 5 | 10 |
| 7 | 16 |
| 8 | 14 |
| 8 | 18 |
| 8 | 17 |
| 13 | 20 |
| 9 | 18 |
| 7 | 17 |
| 8 | 15 |
| 7 | 18 |
| 10 | 18 |
| 9 | 16 |
| 8 | 15 |
| 5 | 19 |
| 8 | 12 |
| 5 | 18 |
| 9 | 14 |
| 5 | 15 |
| 8 | 14 |
| 7 | 19 |
| 9 | 17 |
| 12 | 20 |
| 9 | 17 |
| 7 | 12 |
| 7 | 15 |
| 8 | 18 |
| 8 | 15 |
| 8 | 14 |
| 7 | 14 |
| 8 | 20 |
| 9 | 15 |
| 11 | 20 |
| 8 | 16 |
| 9 | 17 |
| 8 | 20 |
| 9 | 18 |
| 5 | 16 |
| 5 | 12 |
| 8 | 20 |
| 5 | 18 |
| 12 | 20 |
| 5 | 18 |
| 8 | 18 |
| 8 | 14 |
The data for the control group is;
| Pretest | Posttest |
| 6 | 15 |
| 4 | 15 |
| 7 | 12 |
| 7 | 12 |
| 6 | 17 |
| 9 | 15 |
| 3 | 10 |
| 5 | 11 |
| 7 | 12 |
| 8 | 12 |
| 8 | 14 |
| 6 | 10 |
| 6 | 11 |
| 6 | 16 |
| 10 | 20 |
| 6 | 12 |
| 6 | 11 |
| 7 | 15 |
| 8 | 12 |
| 7 | 18 |
| 6 | 16 |
| 6 | 14 |
| 7 | 13 |
| 3 | 13 |
| 5 | 13 |
| 6 | 11 |
| 4 | 10 |
| 4 | 14 |
| 9 | 17 |
| 6 | 12 |
| 7 | 13 |
| 4 | 15 |
| 5 | 15 |
| 5 | 16 |
| 7 | 13 |
| 7 | 15 |
| 7 | 17 |
| 7 | 13 |
| 7 | 13 |
| 6 | 14 |
| 7 | 15 |
| 10 | 17 |
| 5 | 10 |
| 7 | 13 |
| 7 | 13 |
| 8 | 14 |
| 7 | 14 |
| 5 | 18 |
| 9 | 18 |
| 5 | 11 |
| 7 | 17 |
| 6 | 15 |
| 7 | 15 |
| 3 | 10 |
| 6 | 15 |
For the experimental group:
The hypothesis being tested is:
H0: µ1 = µ2
H1: µ1 < µ2
The output is:
| 7.796 | mean Pretest |
| 16.444 | mean Posttest |
| -8.648 | mean difference (Pretest - Posttest) |
| 2.451 | std. dev. |
| 0.333 | std. error |
| 54 | n |
| 53 | df |
| -25.932 | t |
| 4E-32 | p-value (one-tailed, lower) |
Since the p-value (0.0000) is less than the significance level (0.05), we can reject the null hypothesis.
Therefore, we can conclude that the posttest performance of the learners for the experimental group has improved.
For the control group:
The hypothesis being tested is:
H0: µ1 = µ2
H1: µ1 < µ2
The output is:
| 6.345 | mean Pretest |
| 13.855 | mean Posttest |
| -7.509 | mean difference (Pretest - Posttest) |
| 2.227 | std. dev. |
| 0.300 | std. error |
| 55 | n |
| 54 | df |
| -25.009 | t |
| 1E-31 | p-value (one-tailed, lower) |
Since the p-value (0.0000) is less than the significance level (0.05), we can reject the null hypothesis.
Therefore, we can conclude that the posttest performance of the learners for the control group has improved.
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