Kadeem recorded the grade level and instrument of everyone in the middle school School of Rock below. School of Rock Guitar Bass Drums Keyboard Total 6th grade 68 17 14 20 17 7th Grade 15 56 11 11 19 8th Grade 17 15 18 12 62 Total 45 40 57 44 186 What percent of the 7th graders in the School of Rock play guitar? Round your answer to the nearest whole number percent.

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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.