Question

(i) Find x if 15, 12, 11, x.+6,7,5, 4 are in order and their median is 10.
(ii) Find x if 8, 10, x -1, x + 3, 17, 19 are in order and their median is 14.​

Answer 1

Answer:

1. x=4
2. x=13

Step-by-step explanation:

1.) The no. of observation is odd = 7( odd)

Median= (n+1)/2 th term

10 = (7+1)/2. th term

10 =4th term

10 =x+6

10 -6 =x

4= x Ans

2.) The no. of observation is even = 6(even)

Median= ((n/2)+(n/2 +1) th term)/2

14 = ((6/2)+(6/2 +1) th term)/2

14 = (3rd term + 4th term)/2

14 = (x-1+x+3)/2

14 = (2x+2)/2

14×2 =2x+2

28-2= 2x

26/2 =x

13=x Ans