NEET PG Medical – 2020 – Question – 102
study had a normal distribution with the median value as 200 and standard deviation 20. 68 % will fall between
a) 160-240
b) 170-230
c) 180-220
d) 190-210
Show Answer
Correct Answer – C
Ans. C. 180-220
As the median value is 200 and the standard deviation is 20, the normal distribution is:
68% of the population will have values between – median +/- 1 SD = 220 +/- 20 = 180-220
95% of the population will have values between – median +/- 2 SD = 220 +/- 40 = 160-240
Note: in the MCQ, as the data shows a normal distribution, the median will be equal to mean and the mode.
Park’s PSM Ed. 24th page no. 885
