The image appears to be a page from a Vietnamese textbook or educational material, specifically focusing on the topic of "Thống kê học" (Statistics). The text is written in Vietnamese and includes several numbered sections, each containing a brief explanation or question related to statistics.

Here's a summary of the content:

1. **Section 1:**
   - **Question:** What is the difference between descriptive and inferential statistics?
   - **Answer:** Descriptive statistics involves summarizing data through measures such as mean, median, mode, standard deviation, and frequency distribution. Inferential statistics, on the other hand, involves making conclusions about a population based on sample data. This includes hypothesis testing, confidence intervals, and regression analysis.

2. **Section 2:**
   - **Question:** What is the difference between a t-test and an ANOVA?
   - **Answer:** A t-test is used to compare the means of two groups, while an ANOVA (Analysis of Vari