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Business Statistics and Research Methods
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Q621

The central value of a serially arranged series is known as

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Q622

In comparison of secondary data, the primary data are

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Q623

There will be positive correlation in X and Y, if

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Q624

Classification of data may be

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Q625

Assertion (A) Standard deviation is independent of change of origin.
Reason (R) The value of standard deviation remains the same, if in a series each the observation is increased or decreased by a constant quantity.

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Q626

An investigator collects data himself or through his agents by contacting and interviewing students and the same data has been collected by the student union and the investigator obtains the data from the students union officer.

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Q627

In this the value of rank correlation coefficient will be

Rank X	5	3	4	8	2	1	7	10	6	9
Rank Y	3	7	5	9	2	4	1	10	8	6

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Q628

The mean of 15 numbers was found to be 15. If two numbers 18 and 12 are taken out, then the mean of remaining numbers will be

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Q629

To calculate the arithmetic mean, there should be class differences

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Q630

The absolute value of the difference between an unbiased point estimate and the corresponding population parameter is known as a

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Q631

If the coefficient of determination is a positive value, then the regression equation:

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Q632

Calculate the mean of marks of 46 students from the following table.

Marks (X)	Frequency
9	1
10	2
11	3
12	4
13	5
14	6
15	7
16	8
17	9
18	10
Total	55

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Q633

Concurrent deviation correlation coefficient is obtained by the following formula.

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Q634

Arithmetic mean of 98 items is 50. Two items 60 and 70 were left out at the time of calculation. What will be the correct mean of all the items?

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Q635

Consider the following statements:
1. Median is not useful while dealing with skewed distribution such as income distribution or price distribution
2. Median can be determined graphically by drawing only one ogive
3. Mode can be used to describe qualitative phenomenon
Which of the above statements are correct?

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Q636

The median of a series is 10. Two additional observations will be 7 and 20 are added to this range. The median of new class will be

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Q637

The . . . . . . . . can be formed by dividing the frequency distribution by the total number of observations.

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Q638

Match the following.

List-I	List-II
a. Research type	1. Problem solving
b. Research design	2. Feminist
c. Research method	3. Survey

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Q639

Which of the following are considered nonparametric tests?
1. Mann-Whitney U test
2. Kruskal-Wallis test
3. F-test
4. T-test
5. Chi-square test
Choose the correct option from the following:

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Q640

Pre-testing the questionnaire is associated with:

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