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In: Statistics and Probability

Explain in detail the systematic random sampling. According to the following information, define the sample elements...

Explain in detail the systematic random sampling. According to the following information, define the sample elements
• No. of elements in population: 17024
• No. of desired sample: 19
• The first random number of samples: 112

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Expert Solution

Solution :

Systematic sampling :

In this systematic sampling method we number all the elements in population starting from 1 to N. Then we obtain a constant k such that k = N/n. Where n is the sample size and N is population size. Then we randomly select a starting point and the chosen starting point will be our first sampling element. After that we select every kth sampling elements untill desired.

We have, N = 17024, n = 19

Hence, k = 17024/19 = 896

First random number of the samples is 112. It means our first sample element will be the element corresponding to 112th number.

Afetr 112th unit being the first sampling unit we shall selecte every 896th unit of the population as our sample elements.

Hence, our sample elements would be corresponding to following numbers.

Serial No. Sample Elements
1 112th
2 112 + 896 = 1108th
3 1008 + 896 = 1904th
4

1904 + 896 = 2800th

5 2800 + 896 = 3696th
6 3696 + 896 = 4592th
7 4592+ 896 = 5488th
8 5488 + 896 = 6384th
9 6384 + 896 = 7280th
10 7280 + 896 = 8176th
11 8176 + 896 = 9072th
12 9072 + 896 = 9968th
13 9968 + 896 = 10864th
14 10864 + 896 = 11760th
15 11760 + 896 = 12656th
16 12656 + 896 = 13552th
17 13552 + 896 = 14448th
18 14448 + 896 = 15344th
19 15344 + 896 = 16240th

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