What do descriptive statistics do?

What do descriptive statistics do?

• A. They measure the sampling method
• B. They provide the overall impression of typical values and variability between treatment groups
• C. They summarize data using graphs and numbers
• D. They determine causality

Answer: (B)

Descriptive statistics aim to give a clear snapshot of the data by focusing on central tendency and dispersion. They tell you what values are typical (the central tendency) and how much those values vary (the spread or variability). When data come from different treatment groups, descriptive statistics summarize each group so you can see the common outcomes and how much they differ within and between groups. This helps you grasp the overall pattern without making claims about cause-and-effect or about how the data were collected. Graphs and numeric summaries are the tools used, but the essential idea is conveying the typical values and their variability, which is why this choice best fits what descriptive statistics do.

Descriptive statistics aim to give a clear snapshot of the data by focusing on central tendency and dispersion. They tell you what values are typical (the central tendency) and how much those values vary (the spread or variability). When data come from different treatment groups, descriptive statistics summarize each group so you can see the common outcomes and how much they differ within and between groups. This helps you grasp the overall pattern without making claims about cause-and-effect or about how the data were collected. Graphs and numeric summaries are the tools used, but the essential idea is conveying the typical values and their variability, which is why this choice best fits what descriptive statistics do.