For a stratified sampling from a population with three strata and the variable of interest Y:...
For a stratified sampling from a population with three strata and the variable of interest Y:
Stratum 1: Stratum Size = N1, Sample Size = n1 = 20, Sample Mean of Y values = 50.
Stratum 2: Stratum Size = N2, Sample Size = n2 = 10, Sample Mean of Y values = 30.
Stratum 3: Stratum Size = N3, Sample Size = n3 = 25, Sample Mean of Y values = 40.
The population size is N = N1 + N2 + N3 . The weights are N1/N = 0.45, N2/N = 0.20 and N3/N = 0.35.
Calculate the numerical value of the estimate of Population Mean based on the above sample data information.
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For a stratified sampling from a population with three strata
and the variable of interest Y:...
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stratified random sampling question :
+ s2019/ 3. To estimate the total of the number of socio-democratic seats (SDS), y in a municipal council, the population was stratified into four strata using the total number seats in the municipal council. Some information about these strata is given in the following table. Population Sample Number of N. ΣνΗ seats 31-40 756 44 1,647 13,784 72.223 89 441 41-50 168 3.383 9,735 51 -70 56 1,545 617 44,529 24,137 250 8.294 71-...
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urban, rural non farm and farm - because these groups were expected
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