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Comparing swim times at the Olympics

Khan Academy
Comparing and sampling populations
557
03:59

Comparing throws

Khan Academy
Comparing and sampling populations
546
05:45

Reasonable samples

Khan Academy
Comparing and sampling populations
549
04:16

Sample mean versus population mean

The conceptual and notational differences between a parameter for a population and a statistic calculated from a sample.

Khan Academy
Comparing and sampling populations
519
10:02