Consider the system dx = x + 2y dt dx = -y dt and its corresponding direction field. (a) Sketch a number of different solution curves on the phase plane. 3.0 2.0 1.0 0.0 -1.0 -2.0 -3.0 -4 -3 -2 -1 1 2 3 4 (b) Describe the behavior of the solution that satisfies the initial condition (xo, yo) = (-2,2). (You can use software and try a number of initial conditions like (–1, 1),(-2,2) and (-3, 3). Observe and think why? )

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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.