MEASURES OF VARIABILITY PROBLEM SOLVING 1. Compute the Range on the data below 57 60 65 70 78 80 82 85 90 93 2. Compute the and Range and the Inter-quartile Range on these data below 43, 48, 50, 50, 52, 53, 56, 58, 59, 60, 62, 65, 66, 68, 70, 71, 74, 76, 78, 80

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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.