Suppose you wish to compare the ages at inaugurationof Democratic and Republican presidents. Which is themost appropriate type of technique for gathering theneeded data?A) CensusB) Sample surveyC) ExperimentD) Prospective observational studyE) None of these methods is appropriate.

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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.