Probability in Sampling. Key Concepts l Statistical terms in sampling l Sampling error l The sampling distribution.

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Presentation transcript:

Probability in Sampling

Key Concepts l Statistical terms in sampling l Sampling error l The sampling distribution

Statistical Terms in Sampling Variable

Variable Self-esteem

Variable Statistic Self-esteem

Variable Statistic Self-esteem Average = 3.72 Sample

Statistical Terms in Sampling Variable Statistic Parameter Self-esteem Average = 3.72 Sample

Statistical Terms in Sampling Variable Statistic Parameter Self-esteem Average = 3.72 Average = 3.75 Sample Population

Sampling Error Self-esteem Frequency The population has a mean of 3.75.

Sampling Error Self-esteem Frequency The population has a mean of and a standard error of.25.

Sampling Error Self-esteem FFrequency The population has a mean of and a standard error of.25. This means that...

Sampling Error Self-esteem Frequency The population has a mean of and a standard error of.25. This means that... about 64% of cases fall between

Sampling Error Self-esteem Frequency The population has a mean of and a standard error of.25. This means... About 64% of cases fall between About 95% of cases fall between

Sampling Error Self esteem Frequency The population has a mean of and a standard error of.25. This means About 64% of cases fall between About 95% of cases fall between about 99% of cases fall between

Sampling Error The standard error is called the sampling error The sample of 1000 has a mean of 3.74 and a standard error of Self-esteem Frequency

Sampling Error The sampling error shows that the odds are.95 that the population mean is (.0074) Self-esteem Frequency The sample of 1000 has a mean of 3.74 and a standard error of.0074.

Sampling Error Self-esteem Frequency The sampling error shows that the odds are.95 that the population mean is (.0074). The sample of 1000 has a mean of 3.74 and a standard error of Confidence level

Sampling Error Self-esteem Frequency The sampling error shows that the odds are.95 that the population mean is (.0074). The sample of 1000 has a mean of 3.74 and a standard error of Confidence interval

The Sampling Distribution SampleSampleSample

Sample Sample Sample

Sample Sample Sample AverageAverageAverage

AverageAverageAverage The sampling distribution......is the distribution of a statistic across an infinite number of samples. Sample Sample Sample