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Measures of central tendency and dispersion.

If W denotes the total number of spaces one moves under these special conditions, find the mean and standard deviation of W.

a)      Presume X and Y are random variables with means   6 and 1, respectively. Let W = X - 2Y.  Find the mean of W.

b)     Assume X and Y are independent, with standard deviations 3 and 1, respectively. Find the standard deviation of W.

c)      Suppose Q = (X-6)/3. Find the mean and standard deviation of Q.

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M920892

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