| 1. |
A numerical value used as a summary measure for a sample, such as a sample mean, is known as a |
| A. | population parameter |
| B. | sample parameter |
| C. | sample statistic |
| D. | population mean |
| Answer» C. sample statistic | |
| 2. |
Statistics branches include |
| A. | applied statistics |
| B. | mathematical statistics |
| C. | industry statistics |
| D. | both a and b |
| Answer» D. both a and b | |
| 3. |
To enhance a procedure the control charts and procedures of descriptive statistics are classified into |
| A. | behavioural tools |
| B. | serial tools |
| C. | industry statistics |
| D. | statistical tools |
| Answer» A. behavioural tools | |
| 4. |
Sample statistics are also represented as |
| A. | lower case greek letter |
| B. | roman letters |
| C. | associated roman alphabets |
| D. | upper case greek letter |
| Answer» B. roman letters | |
| 5. |
Individual respondents, focus groups, and panels of respondents are categorised as |
| A. | primary data sources |
| B. | secondary data sources |
| C. | itemised data sources |
| D. | pointed data sources |
| Answer» A. primary data sources | |
| 6. |
The variables whose calculation is done according to the weight, height and length and weight are known as: |
| A. | flowchart variables |
| B. | discrete variables |
| C. | continuous variables |
| D. | measuring variables |
| Answer» C. continuous variables | |
| 7. |
A method used to examine inflation rate anticipation, unemployment rate and capacity utilisation to produce products is classified as |
| A. | data exporting technique |
| B. | data importing technique |
| C. | forecasting technique |
| D. | data supplying technique |
| Answer» C. forecasting technique | |
| 8. |
Graphical and numerical methods are specialized processes utilised in |
| A. | education statistics |
| B. | descriptive statistics |
| C. | business statistics |
| D. | social statistics |
| Answer» B. descriptive statistics | |
| 9. |
The scale applied in statistics which imparts a difference of magnitude and proportions is considered as |
| A. | exponential scale |
| B. | goodness scale |
| C. | ratio scale |
| D. | satisfactory scale |
| Answer» C. ratio scale | |
| 10. |
Review of performance appraisal, labour turnover rates, planning of incentives and training programs and are examples of |
| A. | statistics in production |
| B. | statistics in marketing |
| C. | statistics in finance |
| D. | statistics in personnel management |
| Answer» D. statistics in personnel management | |
| 11. |
Which one is correct for a binomial distribution? |
| A. | mean = variance |
| B. | mean > variance |
| C. | mean < variance |
| D. | mean ≤ variance |
| Answer» B. mean > variance | |
| 12. |
In a binomial distribution, n =5 mean equals 2, what is the value of q? |
| A. | .40 |
| B. | .50 |
| C. | .60 |
| D. | .70 |
| Answer» C. .60 | |
| 13. |
Three fair coins tossed simultaneously what is the probability to get exact 2 head? |
| A. | 3/8 |
| B. | 2/8 |
| C. | 1/8 |
| D. | 1 |
| Answer» A. 3/8 | |
| 14. |
In a binomial distribution variance found to be 1 and q=1/2, what is the value of n? |
| A. | 10 |
| B. | 5 |
| C. | 6 |
| D. | 4 |
| Answer» D. 4 | |
| 15. |
In a basket there are 5 red balls and 3 black balls, what is the probability to select 2 balls from that in which one is black and one is red? |
| A. | 2/8 |
| B. | 5/8 |
| C. | 8/28 |
| D. | 15/28 |
| Answer» D. 15/28 | |
| 16. |
What is true for a poison Distribution? |
| A. | mean = variance |
| B. | mean > variance |
| C. | mean < variance |
| D. | mean ≤ variance |
| Answer» A. mean = variance | |
| 17. |
A statement about a population developed for testing is called |
| A. | hypothesis |
| B. | hypothesis testing |
| C. | level of significance |
| D. | test-statistic |
| Answer» A. hypothesis | |
| 18. |
Any hypothesis, which are tested for the purpose of rejection under the assumption that it is true, is called |
| A. | null hypothesis |
| B. | alternative hypothesis |
| C. | statistical hypothesis |
| D. | composite hypothesis |
| Answer» A. null hypothesis | |
| 19. |
The alternative hypothesis is also called |
| A. | null hypothesis |
| B. | statistical hypothesis |
| C. | research hypothesis |
| D. | simple hypothesis |
| Answer» C. research hypothesis | |
| 20. |
A rule or formula that provides a basis for testing a null hypothesis is called |
| A. | test-statistic |
| B. | population statistic |
| C. | both of these |
| D. | none of the above |
| Answer» A. test-statistic | |
| 21. |
The range of test statistic-t is |
| A. | 0 to ∞ |
| B. | 0 to 1 |
| C. | -∞ to +∞ |
| D. | -1 to +1 |
| Answer» C. -∞ to +∞ | |
| 22. |
If Ho is true and we reject it is called |
| A. | type-i error |
| B. | type-ii error |
| C. | standard error |
| D. | sampling error |
| Answer» A. type-i error | |
| 23. |
A passing student is failed by an examiner, it is an example of |
| A. | type-i error |
| B. | type-ii error |
| C. | best decision |
| D. | all of the above |
| Answer» A. type-i error | |
| 24. |
1 – α is also called |
| A. | confidence coefficient |
| B. | power of the test |
| C. | size of the test |
| D. | level of significance |
| Answer» A. confidence coefficient | |
| 25. |
1 – α is the probability associated with |
| A. | type-i error |
| B. | type-ii error |
| C. | level of confidence |
| D. | level of significance |
| Answer» A. type-i error | |
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