Of the 100 families at a local farmer's market, 75 brought their kids with them, 25 brought their dog and 15 brought neither. How many families broug both their dog and their kids with them? 15 4.

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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.