a). Corelation product moment with deviation
Note :
rxy = koefisien Corelation between variabel x and variabel y, two
variabel that was corelation (x = X-X dan y = Y-Y)
Σxy = amount multiplication x with y
X2 = kuadrat x
Y2 = kuadrat y
b). Corelation product moment with big scala
Note :
rxy = Coefisien Corelation between variabel x and variabel y, 2 variabel
was corelation.
# u can count validity with microsoft excel program (pearson formula)
# u can read about validity with this :
On the validity of the cosine projection in wind-driven rain calculations on buildings [An article from: Building and Environment]
The reliability and validity of tests;: Derivation and interpretation of fundamental formulae concerned with reliability and validity of tests and illustrative problems
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