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4) For stratified sampling, the population variance in stratum h is a. b. Nh (Yhj - h) Nh -1 [EJNh1Yh2j - NhVh2] Show that
4) For stratified sampling, the population variance in stratum h is a. b. Nh (Yhj - h) Nh -1 [EJNh1Yh2j - NhVh2] Show that S} = NhI Let bhj be a random variable where then Var(bhj) = 1 Show that Var(ystr) = Hint: XaXb 0, otherwise and Cov(bhj, bhk) = Nh I (92 (A- Nh Nh Nh(Nh 1) Nh 1
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To solve the problem lets approach each part step by step Part a We need to show that Sh2 frac1Nh 1 ...
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Nonlinear Systems And Their Remarkable Mathematical Structures Volume 3, Contributions From China
Authors: Norbert Euler, Da jun Zhang
1st Edition
1000423301, 9781000423303
