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.
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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
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