Freshman 15? Many people believe that students gainweight as freshmen. Suppose we plan to conduct a studyto see if this is true. a) Describe a study design that would require a matched-pairs t procedure to analyze the results. b) Describe a study design that would require a two-sample t procedure to analyze the results.

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Types of Bias

Statistics is the study of data collection, organization, analysis, interpretation, and presentation. Statistical bias is a characteristic of a statistical technique or its findings in which the expected value deviates from the actual root quantitative parameter being estimated. According to the actual definition of bias, it refers to the tendency of a statistic to overestimate or underestimate a parameter.