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Biostatistics
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1. What is the mode in statistics?

A. Value of middle observation

B. Arithmetic mean

C. Most commonly occurring value

D. Difference between the highest and lowest value

2. Square root of deviation is called:

A. Standard deviation

B. Standard error

C. Mean deviation

D. Range

3. In normal distribution curve, sampling values following:

A. Mean=Median

B. Mean=S.D

C. Mean=Variant

D. Mean= 2 x median

4. Which is false about normal distribution curve?

A. In a normal curve 95% of values in within 1 SD

B. Mean, mode and median coincidence

C. Median is mid value

D. Mode is commonest occurring value

5. Shape of a normal curve is:

A. Symmetrical

B. Curvilinear

C. Linear

D. Parabolic

6. The area under normal distribution curve for S.D. of 2 is:

A. 68%

B. 95%

C. 97.5%

D. 100%

7. In a standard normal curve the area between one standard deviation on either side will be:

A. 68%

B. 85%

C. 97.5%

D. 99%

8. Normal distribution curve is explained using:

A. Mean and sample

B. Mean and median

C. Median and standard deviation

D. Mean and standard deviation

9. In a highly skewed distribution central tendency is better explained by:

A. Mode

B. Median

C. Standard deviation

D. Mean

10. Which is false about normal distribution curve?

A. 95% of values fall within 1 S.D.

B. Mean, median and mode coincide

C. Median is the midvalue

D. Mode is commonest occurring value

11. Right sided skewed distribution causes:

A. Median is more than mean

B. S.D. is more than variance

C. "Tail" to the left

D. "Tail" to the right

12. In a normal distribution curve, the true statement is:

A. Mean = SD

B. Median = SD

C. Mean = 2 Median

D. Mean = Mode

13. If the mean is 230 and the standard error is 10, the 95% confidence limits will be:

A. 210 to 250

B. 220 to 240

C. 225 to 235

D. 230 + or -210

14. Among the following which is most significant P value?

A. 0.005

B. 0.05

C. 0.01

D. 0.1

15. The number of degrees of freedom in a table of (4x4):

A. 4

B. 8

C. 9

D. 16

1. C 2. A 3. A 4. A 5. A
6. B 7. A 8. D 9. A 10. A
11. C 12. D 13. A 14. A 15. C

References

1. Polit H, Beck C T. Nursing research. 8th ed. New Delhi: Williams and Wilkins; 2008.
2. Burns N, Grove S K. Understanding nursing research. 4th ed. New Delhi: Elsevier; 2007.
3. Park JE, Park K. Text Book of Preventive and Social Medicine. 19th Edition. Jabalpur: M.S. Banarsidas Bhanot; 2007.
4. Questions from entrance examinations relevant to nursing conducted in India. (NIMHANS/AIIMS/Manipal/Kerala/All India etc..)
5. Cohen J. Statistical Power Analysis for the Behavioral Sciences. Erlbaum, Hillsdale, NJ; 1988.
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