A national survey of graduate students is conducted to assess their consumption of coffee. The following table summarizes the data. What proportion of coffee drinkers (caffeinated and decaffeinated) is female?     Do Not Drink Coffee Drink Decaffeinated Only Drink Caffeinated Coffee Male 145 94 365 Female 80 121 430   A)0.70 B)0.50 C)0.90 D)0.546

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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.