The table shows population statistics for the ages of Best Actor and Best Supporting Actor winners at an awards ceremony. The distributions of the ages are approximately bell-shaped. Compare the z-scores for the actors in the following situation. Best Actor Best Supporting Actor H= 42.0 H= 54.0 o = 8.7 in a particular year, the Best Actor was 39 years old and the Best Supporting Actor was 83 years old. O = 13 Determine the z-scores for each. Best Actor: z = -0.34 Best Supporting Actor: z = 2.23 Round to two decimal places as needed.) Interpret the z-scores. The Best Actor was less than 1 standard deviation below the mean, which is not' unusual. The Best Supporting Actor was more than 2 standard deviations above the mean, which is unusual.

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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.