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Business Statistics and Research Methods
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Q821

The arithmetic mean of a series is the figure obtained by dividing the sum of values of all items by

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Q822

Assertion (A) Median is simply the middle value when the data have been arranged in ascending or descending order.
Reason (R) Median refers to middle value in the distribution.

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Q823

Which one of the following software is used for Research Analysis?

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Q824

The value of correlation lies between - and -

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Q825

In badminton practice session, the probability that the player A serves properly is 0.8 and that he player B serves properly is 0.9. If there are only two players, then find the probability that it is serves properly.

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Q826

Sturge's rule is used to find out directly:

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Q827

Two events are said to be independent, as per the theory of probability, if the occurrence of one

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Q828

In . . . . . . . ., selection of sample items is independent of the person making the study.

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Q829

Arrange the following statements in chronological order.
1. Normal distribution was discovered by English mathematician De Moivre.
2. Rediscovered and applied in Science, both natural and social and in parochial affairs by Laplace.
3. Normal distribution was extensively development and utilised by Carl Friedrich Gauss.

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Q830

Consider the following statements.
Statement-I: When the null hypothesis is true but as per the hypothesis-testing, it is rejected, it is known as beta type error in hypothesis testing.
Statement-II: Chi-square test is exclusivelya non-parametric test.

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Q831

Which amongst the following is not the source of secondary data?

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Q832

Summary and presentation of data in tabular form with several non-overlapping classes is referred as

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Q833

A sampling distribution is the probability distribution for which one of the following?

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Q834

Karl Pearson correlation coefficient between X and Y is -0.75, the covariance is -15 and the standard deviation of series y is 5, then standard deviation of series X is will be

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Q835

For two events A and B, if P(B) = 0.5 and P (A

\cup

B) = 0.5, then P (A|B) =?

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Q836

Large sample theory is applicable when:

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Q837

Match the following.

List-I	List-II
a. Histogram	1. Line chart of frequency distribution
b. Bar diagram	2. Data is represented in form of series of rectangle and is two dimensional
c. Frequency polygon	3. Lengths of bars are proportional to their corresponding values
d. Cumulative frequency curve	4. Graphic representation of a cumulative frequency distribution

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Q838

Which of the following is not a "Graphic representation"?

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Q839

Read the following statements and choose the correct answer:
Statement-I: Non-parametric tests are based on some assumptions about the parent population from which the sample has been drawn.
Statement-II: The standard deviation of the sampling distribution of mean is called standard error of mean.

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Q840

The correlation coefficient in the two variable X and Y is 0.74. This is

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