Statistics
Confusing a Population with a Sample
Students call the people they surveyed the population instead of the sample.
Quick check
Why students make it
The surveyed group feels like the whole data set because it is the group students actually see. This hides the bigger group the question is trying to describe.
The rule done right
The population is the entire group you want information about. A sample is the smaller group actually measured or surveyed.
Related resources
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Statistics, Parameters vs Statistics Infographic -
Population vs Sample Infographic -
Statistics, Sampling Bias Types Infographic -
Statistics, Nonresponse and Undercoverage Bias Infographic -
Statistics, Simple Random Sampling Infographic - Sampling Methods & Survey Design Cheat Sheet
- Margin of Error Reference Cheat Sheet
- Confidence Interval Master Reference Cheat Sheet
- Power Analysis & Sample Size Reference Cheat Sheet
- Statistics, Sampling Worksheet
- Statistics, Sampling (Advanced) Worksheet
- Statistics, Designing a Survey, Question Bias and Sampling Worksheet
- Statistics, Simulations and Sampling Worksheet
- Statistics, Confidence Intervals and Margin of Error Worksheet
- Sampling Distribution Visualizer Tool
- Central Limit Theorem Simulator Tool
- Confidence Interval Calculator Tool
- Power & Sample Size Planner Tool
- Hypothesis Testing Calculator Tool
- Sampling & Randomization Lab Lab
- Central Limit Theorem & Sampling Distributions Lab Lab
- Bootstrap & Confidence Interval Lab Lab
- Hypothesis Testing Lab Lab