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Fundamental Concepts of Statistics

幫考網校2020-08-06 19:04:55
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1. Population: The entire group of individuals or objects that we want to study.

2. Sample: A subset of the population that is selected for study.

3. Variable: A characteristic or attribute that can take different values for different individuals or objects.

4. Data: The values of the variables for the individuals or objects in the sample.

5. Descriptive statistics: Methods used to summarize and describe the data.

6. Inferential statistics: Methods used to make inferences about the population based on the sample data.

7. Parameter: A numerical summary of a population.

8. Statistic: A numerical summary of a sample.

9. Sampling: The process of selecting a sample from a population.

10. Probability: The chance of an event occurring.

11. Probability distribution: A mathematical function that describes the probabilities of different outcomes in a random experiment.

12. Hypothesis testing: A method used to test a hypothesis about a population parameter based on sample data.

13. Confidence interval: An interval estimate of a population parameter based on sample data.

14. Correlation: A measure of the strength and direction of the linear relationship between two variables.

15. Regression: A method used to model the relationship between a dependent variable and one or more independent variables.
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