If a Researcher Is Interested in Having a Group of 100

question 109

Multiple Choice

If a researcher is interested in having a group of 100 people complete a survey and she plans to calculate a variance estimate and standard deviation estimate for that group,how can she increase her degrees of freedom before she does her calculations?

• A)Do not use a correction in the denominator of the variance calculation.
• B)Have more than 100 people complete the survey.
• C)Reduce variability of the sample by collecting information from a homogeneous group.
• D)Include a mean square calculation for the standard deviation estimate.

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