Question

The quartile deviation of a normal distribution with mean 10 and standard deviation 4 is(a) 0.675.(b) 67.50.(c) 2.70(d) 3.20.

Answer 1

Hello Dear,

◆ Answer -

(c) 2.70

◆ Explanation -

In normal distribution, quartile deviation is related to standard deviation as

Q.D. = 0.675 σ

Q.D. = 0.675 × 4

Q.D. = 2.70

Therefore, quartile deviation is 2.70 .

# Important Concepts -

• Standard deviation is the measure to quantify amount of variation in data values from central tendency.
• Quartile deviation is the measure of spread of observations from central tendency.

Hope this helped you..