Intervention of the Study The Population and Sample of the Research The Instrumentof the Research
the outcomes differ between the experiment class and control class. Here, writer used the t-test to prove the hypothesis. The formula of t-test was:
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In which: : Mean of post-test of experiment class
: Mean of post-test of controlled class SE
:
Standard error of experiment class SE
:
Standard error of controlled class X
: Using Reciprocal Teaching Technique in Experiment Class Y
: Using Conventional Technique in Control Class
The procedures of calculation were as follow: 1. Determining men of variable X the formulation is:
=
∑
2. Determining men of variable Y the formulation is: =
∑
3. Determining Standard Deviation X SDx, with formula: √
∑
4. Determining Standard Deviation Y SDy, with formula:
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AnasSudijono, PengantarStatistikPendidikan, Jakarta: PT. Raja GrafindoPersada, 2010, p. 314.
√ ∑
5. Determining Standard Errors Mean Variable X SEmx, with formula:
√
6. Determining Standard Errors Mean Variable X SEmx, with formula: √
7. Determining the difficulties of Mean Variable X and Mean Variable Y, with formula:
√ After all of the data are calculated, the last procedure is determining df degree of
freedom with formula: df= N1+N2 -2
In where: M : The Average of Student Score
SD : Standard Deviation SE : Standard Errors
X : Experiment Class Y : Controlled Class
N : Total of the Students df : degree of freedom