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Mathematics, 29.12.2019 15:31 monsurviky

Chelsea wants to determine the number of people in her school who read news reports on the internet daily. she asks five people in her language arts class. which improvements could chelsea make to her sample to increase the validity of the results? check all that apply.
increase the sample size
choose students from different grade levels
choose every fourth student in all language arts classes
decrease the sample size
choose students whose answer to the survey question is predetermined

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