Determine the direction of relationship between the following pairs of variables. Is it positive, negative, or zero? 1. Speed and mileage of a car 2. Extent of fatigue and performance in a speed test 3. Income and educational attainment of employees 4. Sense of humor and shoes size of persons 5. Ages of husbands and wives

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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.