Question 1 Let D = {< x,y >E R? : x? + y? - 2y <0} and consider the function f: D R defined by f(x, y) = (a+ 1)(x2 - y?). Determine if the global minimum and maximum values of f exist on D, and find these if they exist. State the theorems that you use and show that the requirements of these theorems are met.

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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.