Thirty of the 198 students enrolled in Statistics 101 were asked if they wanted Exam Il to be a take-home or an in-class assessment. Twenty, or about 67%, of the students polled indicated a preference for an in-class exam. The professor concluded that the majority of students in Statistics 101 would prefer an in-class examination for Exam II. Did the professor perform a descriptive study or an inferential study? O Descriptive O Inferential

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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.