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Business Statistics and Research Methods
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Q381

Which of the following statements is false?

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Q382

Questionnaire should have the following number of questions.

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Q383

Given the following numbers
2, 8, 6, 5, 0, 9, 7, 11
The product of their arithmetic and geometric means is

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Q384

The standard deviation of Bionomial distribution is:

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Q385

In a place, average rainfall was 6 cm during Monday to Saturday. Due to heavy rainfall on Sunday the average of the week was increased to 9 cm. The rainfall on Sunday will be:

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Q386

The coefficient of correlation is independent of change of

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Q387

Karl Pearson's coefficient of skewness is . . . . . . . . Bowley's coefficient of skewness for any skewed distribution.

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Q388

The members of a stratum are . . . . . . . . to each other and are . . . . . . . . from the members of another stratum in the characteristics that is measured.

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Q389

Which measure of dispersion is square of standard deviation?

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Q390

Coefficient of range can be calculated as

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Q391

You wish to make a precise estimate about the characteristics of a population of individuals. You should use:

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Q392

Which of the following is more frequently used in statistical analysis of hypothesis?
1. Null hypothesis
2. Alternate hypothesis
3. Mixed hypothesis

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Q393

In which way Charlier's test is used to check the accuracy of the counting operation while finding the arithmetic mean in frequency distribution?

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Q394

. . . . . . . . method is used for statistical quality control.

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Q395

The degree of confidence with, which it is asserted that a particular value of the population lies within the certain limits is known as the . . . . . . . .

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Q396

Statistics is a characteristic of a . . . . . . . . and parameter is a characteristic of a . . . . . . . .

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Q397

Dispersions are NOT calculated about

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Q398

Laspreyer's formula

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Q399

Regression analysis is a measure of

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Q400

Which of the following statements are true? Select the correct option.
(1) The coefficient of rank correlation has the same limits as the Karl Pearson's coefficient of correlation.
(2) The coefficient of correlation is independent of the change of origin but not of scale.
(3) The covariance between X and Y is defined as where and n = number of paired observations.
(4) Bxy is called regression coefficient of X variable on Y variable.
(5) If bxy is 0.4 and byx is 1.6, coefficient of determination would be 0.8.

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