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Q254

RRB NTPC 2017 · Question 254 of 1076

The mean deviation of the data 3, 10, 10 4, 7, 10 5 is :

A$$\frac{49}{7}$$
B$$\frac{19}{7}$$
C$$\frac{50}{7}$$
D$$\frac{18}{7}$$Correct

Answer: D. $$\frac{18}{7}$$

Official answer key verified. Detailed explanation coming soon.

Source: RRB NTPC Tier-2 (CEN 03/2015) 17-Jan-2017 Shift-1 — solved paper with answer key · reliable-secondary

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RRB NTPC 2017 Q254: The mean deviation of the data 3, 10, 10 4, 7, 10 5 is : | Testwala | Testwala