1. Descriptive statistics (Descriptive Statistics) meant to describe the nature of the data (Data) which were collected from a population or group interest. Which may be expressed in the mean, median, mode, variance, standard deviation, percent, etc.
2. inferential statistics (Inferential Statistics) statistics means that by analyzing data collected from a sample. The summary describes some characteristics of the population. The theory of probability applied statistics branch, including statistical estimation. Statistical hypothesis testing Correlation and regression analysis and so on.
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