Q10 of 43 Page 293

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

(7) If = 21.44 and Z = 19.13, then M =


Given that,

Z = 19.13



To find: M = ?


By empirical relationship, we can write


Mode = 3 (Median) – 2 (Mean)


⇒


⇒


⇒


Putting in the given values, we can



⇒


⇒


⇒ M = 20.67


Thus, option (d) is correct.

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Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

(9) The modal class of the frequency distribution given below is