Q3 : The accuracy of detecting covid-19 using a specific PCR device is 90%. Knowing that the percentage of population who has covid-19 is 2%. a-Find the probability that a person who actually positive detected as positive b- Find the probability that a person who actually positive detected as negative

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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.