IN 10 MATHEMATICS TEST A STUDENT
SCORED
45, 67, 89, 50,100, 90, 82, 99, 60, 30
DRAW STATISTICAL TABLE FOR THE GIVEN
DATA
Answers
Given : IN 10 MATHEMATICS TEST A STUDENT SCORED
45, 67, 89, 50,100, 90, 82, 99, 60, 30
To find : Mean median , Mode & Range
Solution:
10 MATHEMATICS TEST A STUDENT SCORED
45, 67, 89, 50,100, 90, 82, 99, 60, 30
arranging in ascending order
30 , 45, 50, 60 , 67, 82, 89, 90, 99, , 100
Mean = ( 30 + 45 + 50 + 60 + 67 + 82 + 89 + 90 + 99 + 100)/10
=(712)/10
= 71.2
Median = (67 + 82)/2 = 74.5
Mode - There is no Mode
Range = 100 - 30 = 70
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Answer:
(1) Rearranging in ascending order:
30, 45, 50, 60, 67, 82, 89, 90, 99, 100
Mean = Sum of marks scored by all students/Number of students mark in the test.
Mean = 712/10
Mean = 71.2
Median = 67 + 82/2
Median = 74.5
Range = Higest mark/Least mark
Range = 100 - 30
Range = 70
Here, there's no (mode).