Business statistics and research methods Archives

1. The most appropriate measure of dispersion for open-ended sections is

Range

Quartile deviation

Mean deviation

Standard deviation

Detailed SolutionThe most appropriate measure of dispersion for open-ended sections is

2. . . . . . . . . error is committed when the hypothesis is true but out test rejects it.

Type I

Type II

Both A and B

None of these

Detailed Solution. . . . . . . . error is committed when the hypothesis is true but out test rejects it.

3. If for a sample data : Mean < Median < Mode, then the distribution is-

Skewed to the right

Symmetric

Skewed to the left

Neither symmetric nor skewed

Detailed SolutionIf for a sample data : Mean < Median < Mode, then the distribution is-

4. Which one of the following is a false statement?

The signs of the regression coefficients are always the same

Correlation coefficient is the geometric mean of the two regression coefficients

The covariance between two variables divided by the product of their standard deviations produces the value of coefficient of correlation

Coefficient of correlation is independent of origin but not of scale

Detailed SolutionWhich one of the following is a false statement?

5. National sample survey organisation conducts surveys on

Socio-Economic Subjects

Agricultural and Industrial Subjects

Demographic issues

All of the above

Detailed SolutionNational sample survey organisation conducts surveys on

6. Which of the following averages can not be calculated with the help of graphic presentation?

Arithmetic mean

Quartiles

Median

Mode

Detailed SolutionWhich of the following averages can not be calculated with the help of graphic presentation?

7. If the population is heterogeneous, which one of the following probability sampling methods is more appropriate?

Sequential sampling

Quota sampling

Double sampling

Stratified sampling

Detailed SolutionIf the population is heterogeneous, which one of the following probability sampling methods is more appropriate?

8. The coefficient of correlation

Has no limits

Can be less than one

Can be more than one

Varies between Â± 1

Detailed SolutionThe coefficient of correlation

9. A distribution where the mode has a lower value than the median and the median is less than the mean is known as:

Positively skewed distribution

Normal distribution

Negatively skewed distribution

Continuous distribution

Detailed SolutionA distribution where the mode has a lower value than the median and the median is less than the mean is known as:

10. The most appropriate average to be used to compute the average rate of growth in population is

Arithmetic mean

Median

Geometric mean

Harmonic mean

Detailed SolutionThe most appropriate average to be used to compute the average rate of growth in population is

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