Monday 6 August 2012

statistik


VALIDITY=A TEST OF TRUTH OR ACCURACY

RELIABILITY=consistency=thiqah=kukuh

Viability=buleh berdiri sendiri=hidup



CORRELATION=A STATEMENT ON THE RELATIONSHIP BETWEEN TWO VARIABLES eg hours spent on studying and result cgpA

Prediction= a statement that makes an assertion concerning what will occur in a particular research investigation

Contoh hypothesis= Adakah pelajar yang telah dibuli akan buli pelajar pada masa depan…contoh pelajar kik spm pada 25 tahun lalu yang dibuli pelajar form 5 akan buli pelajar baru apabila mereka berada d form five…

FACTORS affecting reliability coefficients

1.range of scores range high correlation coefficient high=directly reletionship

2. length of test

3. probability of guessing

Long test is reliable than shorter test

Standard error =we use this number to calculate a confidence interval/selang keyakinan

r=reliability=Alfa cronba…

KALAU r highly maka reliability highly SE=standard error low

r investly relationship with SE

standard diviation SD directly relationship with SE

luas di bawah keluk =selang keyakinan=confidence interval

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