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Questions and Answers
What is the main purpose of descriptive statistics?
What is the main purpose of descriptive statistics?
- To summarize and describe the main features of a dataset (correct)
- To prove cause-and-effect relationships between variables
- To determine the probability distribution of a population
- To make predictions about future events based on historical data
Which measure of central tendency is most affected by outliers?
Which measure of central tendency is most affected by outliers?
- Range
- Median
- Mode
- Mean (correct)
In a normal distribution, what percentage of data falls within one standard deviation from the mean?
In a normal distribution, what percentage of data falls within one standard deviation from the mean?
- 85%
- 80%
- 68% (correct)
- 75%
