A random sample of 76 statistics students were asked about their latest test score (pass or failand whether they studied for the test or not. The following contingency table gives the two-way classification of their responses

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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.