Health Survey In a survey of 1020 adults in the United States, 44% said that they wash their hands after riding public transportation (based on data from KRC Research). a. Identify the sample and population. b. Is the value of 44% a statistic or parameter? c. What is the level of measurement of the value of 44%? (nominal, ordinal, interval, ratio) d. Are the numbers of subjects in such surveys discrete or continuous?

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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.