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Statistics Unit 2
Unit 2
Question | Answer |
---|---|
Statistical Inference Purpose | |
A parameter | is a numerical characteristic of a population. |
The sample results provide only _________ of the values of the population characteristics | estimates |
Point Estimation | estimate of some population parameter |
sample meany y as the point estimator of the___________ | population mean u |
sample variance s*2 as the point estimator of the _____________ | population variance q*2 |
sample proportion p as the point estimator of the ______________ | population proportion п |
Sampling Error | expected value of a point estimator = population parameter, the point estimator is said to be UNBIASED. If they are not euqal ' sampling error |