In a gym class there are 22 seniors, 12 juniors, 10 sophomores and 15 freshmen. When 4 students are selected at random, whuat is the probabtty there are an equal number from each level? Answers are left in Combinatorics format. O There is not enough available information to answer this question (12 Y 22 15 Y 10 4. 4人4 59 22 10 59 4 15 10 59 4 す

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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.