Question

The marks in maths of 12 students of class VII are given below.
29,20,22,30,29,27,25,26,29,21,22,19. Find
() Range of data
(ii) Median
(iii) Mode
(iv) Mean of the Median and Mode
with explain ​

Answer 1

Step-by-step explanation:

i) range = maximum – minimum

so,

firstly find the highest number which is 30 and now find the lowest number which is 19 now subtract: 30 – 19 = 11

so range = 11.

ii) median: N + 1 / 2

arrange these numbers in ascending or descending order and then find its middle number which is 25. now , 25 +1 / 2 = 26 / 2 = 13

so 13 is the answer of (ii).

iii) mode

for finding mode you have to arrange the numbers in ascending or descending order and then find the number which occur most frequently which is 29 and 22 so your answer is 29 and 22.

iv) it's just so simple , add the numbers and then divide them. 13 + 29 + 22 / 3 = 64 / 3 = 21.3

so 21.3 is your answer.