2 Mark Each

Question 12 Marks

There are 40 employees in a company. A systematic sample of size 5 is to be selected from them. Explain how would you select the sample.

Answer

Here, $N =40, n=5$
Sampling interval $k=\frac{ N }{n}=\frac{40}{5}=8$
$\therefore$ Total no, of samples $=8$

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Question 22 Marks

Obtain a random sample of 12 mobile phone numbers without replacement for a promotional offer from a list of 100 mobile phone numbers using the following random numbers.
(Note : Use first two digits of every number.)
$153,375,263,699,157,448,687,833,940,697,260,378,269,515,778,786,143$

Answer

$N =100, n=12$ sample without replacement $15,37,26,69,44,68,83,94,51,77,78,14$

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Question 32 Marks

50 students study in a class. Obtain a random sample of size 5 with replacement using the following random numbers.
$03,47,43,73,86,36,96,47,36,41,25,33$

Answer

$N =50, n=5$ sample with replacement $03,47,43,36,47$

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Question 42 Marks

Write the advantages and disadvantages of simple random sampling.

Answer

self

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Question 52 Marks

Write the points to be considered while determining the sample size.

Answer

self