Question

The marks in a subject for 12 students are as follows: 31,37,35,38,42,23,17,18,35,25,35,29 for the given data find mean median mode and range.​

Answer 1

Answer:

Mean = 21.25

median = 33

mode = 35

range = 25

Step-by-step explanation:

mean = sum of all observations / number of observations

31+37+35+38+42+23+17+18+35+25+35+29/12

255/12

21.25.

Median = arranging in ascending order :

17,18,23,25,2931,35,35,35,37,38,42

middle most term = 31,35

median = the average of the two numbers

31+35/2=66/2=33

median = 33

Mode = arranging in ascending order :

17,18,23,25,2931,35,35,35,37,38,42

here 35 occurs maximum number of times

thus the mode is 35

range = biggest number - smallest number on the observation

= 42 - 17

=25

range = 25