Tuesday, March 29, 2011

The Standard Error and Confidence Intervals

Here are three videos that should help you understand how to calculate:

  • The standard error for a sample proportion.

  • The standard error for a sample mean.

  • A 95% confidence interval for both a sample proportion and a sample mean.

  • A 99% confidence interval for both a sample proportion and a sample mean.

    • Go ahead and watch all 3 videos in order (each video is approximately 5 minutes):










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