Researchers want to investigate the relationship between the voters’ income level and their voting tendencies in the United States. They took a random sample from each state and asked them about their tendency of voting. What is the population in this problem? The random sample of voters collected by the researchers. All of the voters in United States. The voters’ income level. The voters’ voting tendencies. The income level of the randomly selected voters from each state.

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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.