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Sample vs Population comparing mean and standard deviations

Sample vs Population comparing mean and standard deviations.

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Sample vs Population comparing mean and standard deviations

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  1. Sample vs Populationcomparing mean and standard deviations MM2D1d Compare the means and standard deviations of random samples with the corresponding population parameters, including those population parameters for normal distributions. Observe that the different sample means vary from one sample to the next. Observe that the distribution of the sample means has less variability than the population distribution.

  2. Sample vs PopulationMeans and Standard Deviations • Let’s watch… • http://www.onlinemathlearning.com/population-mean.html

  3. Sample vs. Population • Sample mean- average of the sample taken • Population mean-average of everything (given, not calculated)

  4. Sample vs. Population The sample means are higher than the population mean. The sample standard deviations are lower than the population standard deviation. Random 1 Mean-5.3 Standard Deviation-2.44 Random 2 Mean-5 Standard Deviation-2.58

  5. Sample vs. Population For a large population, the mean is 13.7 and the standard deviation is about 8.9. Compare the mean and standard deviation of the random sample to the population parameters. 19, 8, 12, 17, 16, 25, 5, 18, 21, 7 Mean-14.8 Standard Deviation-6.23 The mean is larger and the standard deviation is smaller.

  6. Sample vs. Population • Pgae 275 (1-11)

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