While at the Mall of America, Consumer Guide Report surveyed 500 people and asked them to list the number of credit cards currently in their wallet or purse. The results of this survey are given in the table below.   Using the survey results given above, determine the average number of credit cards a person carries in their wallet or purse. (Give the answer that you calculated.)

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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.