Meagan Dubean manages a portfolio of 200 common stocks. Her staff classified the portfolio stocks by 'industry sector' and 'investment objective.' Investment Objective Industry Sector Electronics   Airlines   Healthcare   Total Growth 100   10   40   150 Income 20   20   10   50 Total 120   30   50   200 If a stock is selected randomly from Meagan's portfolio, P (Healthcare∪Electronics) = _______. 0.85 0.60 0.90 0.25 0.75

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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.