Question

(11) Show that
7. Find the median of: 241, 243, 347, 350, 327, 299, 261, 292, 271,258 and 257.
[ii] The mean of 18, 24, 15, 2x + 1, and 12 is 21. Find the value of x.
[iii] The median of observation 10, 11, 13, 17, (x + 5), 20, 22, 24. and 53
(arranged in ascending order) is 18. Find the value of x
[iv] Find the mean of first six natural numbers.​

Answer 1

Step-by-step explanation:

7. asending order : 241,243,257,258,261,271,292,299,327,347,350

therefore, the middle term is 271

then the median is = 271

1. ans. mean = sum of all observation/ total no of obsservation

there fore,.21= 18+24+15+(2x+1)+12

6

21= 2x + 91.

6

21×6 -91 = 2x

35 = 2x

x= 17.5

3. mean = sum of all observation/ total no of obsservation

natural no = 1,2,3,4,5,6

therefore ; mean = 1+2+3+4+5+6/ 6

21/ 6

therefore, mean= 3.5

2 ascending order= 10,11,13,17,x+5,20,22,24,53

18 =x+5

18-5 =x

therefore (x) = 13

Answer 2

1st pic:

(I will comment answers 3 and 4 under this)