Let u1, U2, U3, and U4 be vectors in R3, and let W = span{u1, u2, U3 , U4 }. Row reduction is performed to obtain the following: 1 3 U1 U2 Uz U4 1 -2 Choose all of the following statements that must be true. Please note that more than one answer may be correct. O {u1, uz } is a basis for W. O dim W = 2. U {u1, U2, U3 , U4 } is linearly independent. O {(1,0,0), (3, 1, 0)} is a basis for W. O W contains 2 vectors.

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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.