Business Statistics

31

When a researcher want to select a representative sample to asses different parameters from a large sized finite heterogeneous population, which one of the following sampling techniques is the most appropriate?

A) Judgemental sampling B) Simple random sampling C) Stratified random sampling D) Quota sampling

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Answer & Solution

Answer: Option C

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32

What will be the probability that one is king and other is queen?

A) $$\frac{2}{{169}},\,\frac{2}{{663}}$$ B) $$\frac{1}{{52}},\,\frac{2}{{53}}$$ C) $$\frac{1}{{31}},\,\frac{1}{4}$$ D) $$\frac{1}{{51}},\,\frac{2}{{50}}$$

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Answer & Solution

Answer: Option A

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33

Coefficient of quartile deviation is calculated by the formula

A) $$\frac{{{Q_3} - {Q_1}}}{{{Q_3} + {Q_1}}}$$ B) $$\frac{{{Q_3} + {Q_1}}}{{{Q_3} - {Q_1}}}$$ C) $$\frac{{{Q_3} + {Q_1}}}{2}$$ D) $$\frac{{{Q_3} - {Q_1}}}{2}$$

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Answer & Solution

Answer: Option A

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34

Given

This is a . . . . . . . . figure.

A) System Engineering Scope B) PERT C) Data error system D) Data value edition

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Answer & Solution

Answer: Option A

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35

A bag contains 4 white, 2 black, 3 yellow and 3 red balls. What is the probability of getting a white or red ball at random in a single draw of one?

A) 19% B) 58.3% C) 12% D) 13%

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Answer & Solution

Answer: Option B

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36

Frequency distribution includes

A) binomial distribution B) poisson distribution C) normal distribution D) All of these

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Answer & Solution

Answer: Option D

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37

t is

A) Small test B) Correlation C) Large test D) Regression analysis

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Answer & Solution

Answer: Option A

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38

Match the following

List-I (Outcome State)	List-II (Explanation)
a. Certainty	1. Multiple outcomes for each alternative can be identified, but there is no knowledge of the probability to be attached to each.
b. Risk	2. Complete and accurate knowledge of the outcome of each alternative. There is only one outcome for each alternative.
c. Uncertainty	3. Multiple possible outcomes of each alternative can be identified, and a probability of occurrence can be attached to each.

A) a-1, b-2, c-3 B) a-3, b-2, c-1 C) a-2, b-3, c-1 D) a-2, b-1, c-3

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Answer & Solution

Answer: Option C

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39

$${\chi ^2}$$ computed by

A) $${\chi ^2} = \sum \left[ {\frac{{{{\left( {O - E} \right)}^2}}}{E}} \right]$$ B) $${\chi ^2} = \sum \left( {\frac{{O - E}}{N}} \right)$$ C) $${\chi ^2} = \frac{{\sum {{\left( {O - E} \right)}^2}}}{E}$$ D) $${\chi ^2} = \frac{{\sum {{\left( {E - O} \right)}^2}}}{E}$$

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Answer & Solution

Answer: Option C

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40

Which statement is/are correct?

A) The Hierarchical Database Model (HDBM) is applicable when the data in an organisation can be put down in the hierarchical or in terms of the levels, one after another B) The data model is shown by an arrangement of the blocks C) The Network Database Model (NDBM) deals with the set and the records D) All of the above

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Answer & Solution

Answer: Option D

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