Automotive Fuel Efficiency Thirty-two automobiles were tested for fuel efficiency (in miles per gallon). The following frequency distribution was obtained. Find the variance and standard deviation. Round your answers to at least one decimal place. Class boundaries Frequency 7.5-12.5 2 12.5-17.5 6. 17.5-22.5 12 22.5-27.5 27.5-32.5 Send data to Excel Variance = Standard deviation

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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.