Measures of Variability and Dispersion
- Previous year questions on Measures of Variability and Dispersion for NEET PG (National Eligibility cum Entrance Test - Postgraduate), from the Community Medicine section of the exam.
- Most questions here come from previous-year papers of Indian postgraduate medical entrance and licensing exams; where a paper and year are recorded the question carries them. The image-based questions are original vignettes written around an openly licensed figure, and were never asked in any exam.
- 16 live questions in Measures of Variability and Dispersion.
- 1 of 16 questions carries a verified exam year: 2019.
- Community Medicine is worth about 25 of 300 questions on the exam. See every subject’s weightage.
- Question set last updated 3 Sept 2026.
Q1.Which of the following is not a measure of dispersion?
- AMean✓ Correct answer
- BRange
- CVariance
- DStandard error
Q2.Median weight of 100 children was 16 kgs. The standard detion was 8.calculate the percentage coefficient of variance
- A50%✓ Correct answer
- B35%
- C45%
- D55%
Q3.The postoperative quality of life (QOL) scores of 200 prostate cancer patients have a mean of 60 and a standard detion of 10. How many patients are expected to have a QOL score between 40 and 80?
- A190✓ Correct answer
- B136
- C120
- D140
Q4.A Study conducted in a population. Diastolic Blood Pressure mean 110 mm Hg with SD of 11 mm Hg, Vitamin D mean 18 ng/ml with SD of 3 ng/ml. what is the relation between the two variance
- AVariance of Vitamin D > DBP
- BVariance of DBP > 4 times Vitamin D✓ Correct answer
- CData insufficient to comment upon
Q5.How much population falls between median and median plus one standard deviation in a normal distribution ?
- A0.34✓ Correct answer
- B0.68
- C0.17
- D0.47
Q6.Measuring variation between two different units is done through
- AVariance
- BStandard deviation
- CCoefficient of variation✓ Correct answer
- DRange
Q7.A study was conducted to find average intra-ocular pressure. IOP was measured in 400 people and the mean was found to be 25 mm Hg with a standard detion of 10 mm Hg. What is the range in which 10P of 95% of the population would be lying?
- A22-28 mm Hg
- B20-30 mm Hg
- C24-26 mm Hg✓ Correct answer
- D23-27 mm Hg
Q8.Square root of deviation is also called as -
- AStandard deviation✓ Correct answer
- BStandard error
- CMean deviation
- DRange
Q9.Standard detion is a measure of-
- ACentral tendency
- BDetion from mean✓ Correct answer
- CStandard error
- DSkewness
Q10.Area under normal curve within +- 1SD (standard detion)-
- A0.68✓ Correct answer
- B0.17
- C0.12
- D0.34
Answer key
Q1: A. Mean; Q2: A. 50%; Q3: A. 190; Q4: B. Variance of DBP > 4 times Vitamin D; Q5: A. 0.34; Q6: C. Coefficient of variation; Q7: C. 24-26 mm Hg; Q8: A. Standard deviation; Q9: B. Detion from mean; Q10: A. 0.68.
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