1. Determine the number of permutations of {1,2, ., 8} in which exactly four integers are i their natural positions. (for example 18365472 is a good permutation because a1 = 1, a3 3, az = 5, a7 =7 and the other four integers 2,4,6,8 are not in their natural position.) 2. Determine the number of n-digit numbers with all digits odd, such that 1 and 3 each occur a nonzero, even number of times. Uint, wnite the onotino funetien onmino the onr

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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.