Hari ini saya mencoba trial Math Placement Test, dan dari 119 topik, saya hanya bisa mengerjakan 24 topik :D. Banyak PR menanti untuk diingat kembali. Salah satu topik yang tidak bisa saya jawab adalah tentang Chi-squared test. Langsung saja saya googling topik tersebut.
Dari wikipedia, berikut pengertian Chi-squared test : A chi-squared test, also referred to as a 
test (or chi-square test), is any statistical hypothesis test wherein the sampling distribution of the test statistic is a chi-square distribution when the null hypothesis is true. Chi-squared tests are often constructed from a sum of squared errors, or through the sample variance.
Test statistics that follow a chi-squared distribution arise from an
assumption of independent normally distributed data, which is valid in
many cases due to the central limit theorem. A chi-squared test can be used to attempt rejection of the null hypothesis that the data are independent.
test (or chi-square test), is any statistical hypothesis test wherein the sampling distribution of the test statistic is a chi-square distribution when the null hypothesis is true. Chi-squared tests are often constructed from a sum of squared errors, or through the sample variance.
Test statistics that follow a chi-squared distribution arise from an
assumption of independent normally distributed data, which is valid in
many cases due to the central limit theorem. A chi-squared test can be used to attempt rejection of the null hypothesis that the data are independent.
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