Describing Multiple Samples 7.SP.A.2 Grade Practice Test Questions TOC | Lumos Learning

Describing Multiple Samples 7.SP.A.2 Question & Answer Key Resources Lumos StepUp - PARCC Online Practice and Assessments - Grade 7 Mathematics

Lumos StepUp - PARCC Online Practice and Assessments - Grade 7 Mathematics Describing Multiple Samples

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John comes up with the following methods for generating unbiased samples from shoppers at a mall.

I. Ask random strangers in the mall

II. Always go to the mall at the same time of day

III. Go to different places in the mall

IV. Don't ask questions the same way to different people

Which of these techniques represents the best way of generating an unbiased sample?


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