Consider the vector space of 2 × 2 matrices and consider the following matrices in this space: -1 1 1 1 and B = 1 A = 1 2 Verify that in the standard scalar product on the space of matrices i.e., (A, B) = Tr(A'B), the two matrices are orthogonal to each other. Verify the Pythagoras Law for these matrices.

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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.