1. Random sampling or probability sampling includes all the following techniques, except:
A. Simple random sampling
B. Stratified random Sampling
C. Cluster sampling
D. Purposive Sampling
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2. Gender, age-class, religion, type of disease, and blood group are measured on:
A. Nominal scale of measurement
B. Ordinal scale of measurement
C. Interval scale of measurement
D. Ratio scale of measurement
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3. Which scale of measurement has an absolute zero?
A. Nominal
B. Ordinal
C. Interval
D. Ratio
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4. The variable which is influenced by the intervention of the researcher is called:
A. Independent
B. Dependent
C. Discrete
D. Extraneous
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5. The statistical approach which helps the investigator to decide whether the outcome of the study is a result of factors planned within design of the study or determined by chance is called:
A. Descriptive statistics
B. Inferential statistics
C. Normal distribution
D. Standard deviation
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6. Which of the following methods is a form of graphical presentation of data?
A. Line Diagram
B. Pie diagram
C. Bar diagram
D. Histogram
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7. All the following are measures of central tendency, except:
A. Mean
B. Median
C. Mode
D. Variance
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8. Which measure of central tendency is Influenced by extreme scores and skewed distributions?
A. Mean Copyright@ http://nursingplanet.com/Quiz
B. Median
C. Mode
D. Range
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9. A measure of central tendency which is calculated by numbers arranging in numerical order is:
A. Standard deviation
B. Range
C. Median Copyright@ http://nursingplanet.com/Quiz
D. Mode
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10. The proportion of observations fall above the median is:
A. 68%
B. 50%
C. 75%
D. 95%
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11. The indices used to measure variation or dispersion among scores are all, except:
A. Range
B. Variance
C. Standard deviation
D. Mean
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12. A measure of dispersion of a set of observations in which it is calculated by the difference between the highest and lowest values produced is called:
A. Standard deviation
B. Variance Copyright@ http://nursingplanet.com/Quiz
C. Range
D. Mode
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13. A statistic which describes the interval of scores bounded by the 25th and 75th percentile ranks is:
A. Inter quartile range
B. Confidence Interval
C. Standard deviation
D. Variance Copyright@ http://nursingplanet.com/Quiz
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14. The Median value is the:
A. 25th percentile
B. 50th percentile
C. 75th percentile
D. 95th percentile
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15. Large standard deviations suggest that:
A. scores are probably widely scattered.
B. there is very little deference among scores.
C. mean, median and mode are the same
D. the scores not normally distributed.
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16. The formula given below is computational formula for:
A. Variance
B. Mean Copyright@ http://nursingplanet.com/Quiz
C. Standard deviation
D. t-statistic
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17. The squire of the standard deviation is the:
A. Variance.
B. Standard error
C. Z-score Copyright@ http://nursingplanet.com/Quiz
D. Variance
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18. Which is NOT a characteristic of normal distribution?
A. Symmetric Copyright@ http://nursingplanet.com/Quiz
B. Bell-shaped
C. Mean = median = mode
D. Negative skewness
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19. Skewness is a measure:
A. of the asymmetry of the probability distribution
B. decides the distribution may have high or low variance
C. of central tendency
D. None of the above
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20. The formula given below is used to calculate:
| O= Observed frequency |
E= Expected frequency |
A. t-test statistic
B. chi-squire statistic
C. correlation coefficient
D. Standard deviation
Answer Key
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