Video

Reasonable samples (Full video)

Khan Academy
Supporting grades: 7

Description: To make a valid conclusion, you'll need a representaive, not skewed, sample. Created by Sal Khan. City Councilwomen Kelly wants to know how the residents of her district feel about a proposed school redistricting plan. Which of the following survey methods will allow councilwomen Kelly to make a valid conclusion about how residence of her district feel about the proposed plan? So before we even look at these, we just have to realize that if you're trying to make a valid conclusion about how the residents of her entire district feel about the proposed plan, she has to find a representative sample, or not kind of a skewed sample that would just sample parts of her district.

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