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education/statistics/Sampling.md
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@ -22,4 +22,11 @@ Advantages:
- Law of Averages - Law of Averages
Disadvantages Disadvantages
- Not always possible - Not always possible
- Can be very expensive - Can be very expensive
## Bias
| Bias Type | Description |
| ---- | ---- |
| Selection | When the procedure that selects the sample is biased |
| Non-Response | Those that don't respond to a survey may have different characteristics than those that do respond |
| | |