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Covariation

Pembahasan analisis statistik kali ini sampai pada covariation, yang merupakan cabang linear dari Two variables are not equal (agreement sudah dibahas).

Jika skripsi anda termasuk pada kategori covariasi maka pertanyaannya adalah: "How many of the variables are dichotomous?"

Silahkan cocokkan jawaban Anda dengan pembagian berikut ini.

Tidak ada	Statistical Test	Pearson's product moment r
	Statistical Measure	Do Fisher's r to Z transformation and refer the critical ratio of Z to a table of the unit normal curve. (This is a biased estimator)
	SPSS	Pearson Corr, Crosstabs
	SAS	Corr

Jika salah satu, maka “Is the dichotomous variable a collapsing of a continuous variable and do you want to estimate what the correlation would be if it were continuous?”

Ya	Statistical Test	Biserial r
	Statistical Measure	Refer critical ratio for biserial r to a table of the unit normal curve
	SPSS	-
	SAS	-
Tidak	Statistical Test	Pearson's product moment r (equals point biserial r)
	Statistical Measure	Refer critical ratio for point biserial r to a table of the unit normal curve
	SPSS	-
	SAS	-

Sumber:

McNemar, Q. Psychological Statistics. Fourth edition. New York: Wiley 1969.

Jika keduanya, maka “Are the variables collapsings of continuous variables and do you want to estimate what the correlation would be if they were continuous?”

Ya	Statistical Test	Tetrachoric r
	Statistical Measure	Refer critical ratio for tetrachoric r to a table of the unit normal curve
	SPSS	-
	SAS	-
Tidak	Statistical Test	Pearson's product moment r (equals phi)
	Statistical Measure	Refer critical ratio for phi to a table of the unit normal curve
	SPSS	Crosstabs
	SAS	Freq

Sumber:

McNemar, Q. Psychological Statistics. Fourth edition. New York: Wiley 1969.

Sedangkan jenis pemilihan analisis statistik “two variables are not equal” selain linear tidak ada pembahasan.

Catatan:

Seperti biasa, silakan berkonsultasi dengan dosen pembimbing saudara. Lebih baik jika Anda mempersiapkan proses bimbingan dengan melakukan pencarian di internet mengenai hal terkait. (membaca sumber yang saya cantumkan).

Tahukan Anda...

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