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Session 3 Question & Answer Key Resources Grade 7 Mathematics - Skill Builder + New York State Test (NYST) Rehearsal

Grade 7 Mathematics - Skill Builder + New York State Test (NYST) Rehearsal Session 3

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The following table shows how many students are there in each grade at a certain high school. In order for a survey of 40 students to be a good basis for drawing conclusions about the general student body of the school, how many 9th graders should be a part of the survey?
Write your answer and explain in detail, how you arrived at the answer in the box below.

Resource: Question

Question Type: Extended Constructed Response

Standard(s):7.SP.A.1

Standard Description: Understand that statistics can be used to gain information about a population by examining a sample of the population; generalizations about a population from a sample are valid only if the sample is representative of that population. Understand that random sampling tends to produce representative samples and support valid inferences.

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