If the mean of the number 7,3,8,4,x,7,9,7 and 12 is 7, then the difference between the median and mode of the numbers 12,10,8,10,x,7,6,8 and 6 is:

(a)0. (b)1. (c)2. (d)3

mean = 7 =( 7+3+8+4+x+7+9+7+12)/9

So, 63 = 57 + x

So, x = 63 - 57= 6

Ascening orer of 2nd set =6,6,6,7,8,8,10,10,12

so, median = 8

and mode = 6(occuring thrice)

Therefore, median - mode = 8-6 = 2

  • -1
What are you looking for?