Page 246 - IJET_July2021_final

Pretest Posttest Critical t Critical t
M SD M SD value value
Sample N df t value (at 95% (at 99%
Confidence Confidence
Level) Level)
Group 48 7.85 2.82 16.04 3.72 47 -14.899 +/- 2.011 +/- 2.684
Teacher 15 8.60 2.52 19.26 1.98 14 -11.674 +/- 2.145 +/- 2.977
Educators
Student 33 8.00 2.79 14.96 3.48 32 -11.092 +/- 2.037 +/- 2.738
Teachers
N= Number; M= Mean; SD = Standard Deviation; df = Degrees of Freedom

Findings of pretest and posttest is significant and
the Digital SLM on Blogging is effective.
The researchers have developed
a Digital Self Learning Material on When only Teacher Educators (N=15)
Blogging and it was shared with a were taken as sample in the second
sample as an intervention. The efficacy case, t value was calculated as -11.674
of this Digital SLM is evaluated by the at df=14 using SPSS. Again the trend
difference in the mean scores of pretest was the same and the computed t
and posttest. Paired t test was applied value was found much higher than the
to check the significance of difference of corresponding critical t values at both
these means. Only the scores of those 95 percent (t value = +/- 2.145) and 99
participants were considered who gave percent (t value = +/- 2.977) Confidence
both pretest as well as posttest. Levels. This is considered as a significant
difference and the efficacy of Digital
Data presented in Table-1 shows a clear
and around double the increase in the SLM on Blogging is proved.
mean scores of posttest over pretest In third scenario, when only Student
in all the three cases of sample i.e. Teachers (N=33) were taken as sample,
Group, Teacher Educators and Student again the similar pattern was observed
Teachers. This difference in means and the computed t value (-11.0920
can be credited to the efficacy of the was found much higher than the
Self Learning Material on Blogging corresponding critical t values at both
developed by the researcher. 95 percent (t value = +/- 2.037) and 99
percent (t value = +/- 2.738) Confidence
In the first case when the entire sample
was taken as a Group (N=48), t value Levels. This difference is considered
was calculated as -14.899 at df=47 using significant statistically and the efficacy
SPSS. The computed t value was found of Digital SLM on Blogging as an
much higher than the corresponding intervention is proved.
critical t values at both 95 percent (t
value = +/- 2.011) and 99 percent (t value Discussion of the findings
= +/- 2.684) Confidence Levels. This As the computed t value was found
means that the difference in the means higher than the critical t value in all

236 Indian Journal of Educational Technology
Volume 3, Issue 2, July 2021