2.8 : 매개변수 자료를 분석하는 통계적 방법: ANOVA

The Student t-test examines if there is a significant difference between the means of two groups.

It is suitable for data that follows a normal distribution with randomly selected small-sized samples.

For example, in clinical research, it can help compare the average blood pressure levels between two patient groups – one receiving a new drug and the other a placebo.

The goodness-of-fit test compares observed data with expected data based on a specific theoretical distribution.

For instance, in biostatistics, this could be used to verify if the distribution of a genetic trait in a population follows Mendelian inheritance patterns.

Here, the goodness-of-fit test can be used to analyze the difference between observed and expected frequencies in a population.

Both these tests are essential tools in parametric statistics, providing data insights by testing hypotheses and allowing researchers to make informed decisions about their data.