Commerce · all questions

Business Statistics and Research Methods
practice.

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Q121

Which of the following statistical measures is based on all observations?

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Q122

The area under normal distribution covered within μ ± 3σ limit is

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Q123

Survey research is cross-sectional and as a result, it is:

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Q124

Which kind of research is conducted to understand and resolve one's own problems?

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Q125

Which of the following statement is/are correct?
(1) Circle is a two dimensional diagram.
(2) Frequency polygon represents cumulative frequency.
Select the correct answer using the options given below

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Q126

Index for base period is always taken as

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Q127

Assertion (A) Range is not useful to manager for comparison, if the observations are in different units.
Reason (R) For the purpose of comparison a relative measure of range is required which is called coefficient of range.

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Q128

Which of the following statements are true for a standard normal curve?
1. Standard normal curve is symmetrical.
2. Standard normal curve is non-symmetrical.

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Q129

Which of the following test are used for dealing with the problem of small samples?

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Q130

Whenever the data is related to speed distance and time, their best average will be

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Q131

X measures Wages in Rupees

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Q132

Which of the following relation is correct?

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Q133

The probable error of the coefficient of correlation (r) is calculated by which one of the following formulae?

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Q134

"Controlled Group" is a term used in:

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Q135

Which of the following variables cannot be expressed in quantitative terms?

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Q136

The data collected from observation and survey research methods are

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Q137

Following is the information about the employees in an organisation in various age groups. Compute range and coefficient of range.

Class (Years)	Number of Employees
56-60	7
61-65	16
66-70	39
71-75	28
76-80	10

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Q138

A rank correlation coefficient is being calculated, using the formula

R = 1 - \frac{6 \sum d ^{2}}{n ( n ^{2} - 1 )} .

If Σd² = 50 and n = 10, R will (to 2 decimal places) be

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Q139

Incorrect understandings, prestige bias, self interest, respondent's inability are the examples of

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Q140

Given is the following distribution of two variables x and y:

x :	1	2	3	4	5
y :	3	4	5	6	7

The standard deviation of y is

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