Question

87. The mean deviation of normal distribution is 16. The Quartile Deviation is
(a) 10
(b) 12.5
(c) 13.5
(d) 15​

Answer 1

Answer:

(c) 13.5

Step-by-step explanation:

⇔ Understand this relationship.

→ Standard Deviation = 3/2 Quartile Deviation

→ Standard Deviation = 4/5 Mean Deviation

From these we will get,

→ 3/2 × Quartile Deviation = 5/4 × Mean Deviation

→ Quartile Deviation = 5/6 × Mean Deviation

By applying value of 16 as Mean Deviation,

→ Quartile Deviation = 5/6 × 16 ≈ 13.5

→ Quartile Deviation = 13.5

Option C. is correct answer.

Hope this helps!