5. Following are the marks obtained by 16 students of a class in a test (out of 50 marks) in
mathematics:
10, 36, 36, 4, 32, 26, 16, 34, 36, 34, 26, 36, 32, 16, 10, 40
Find:
(a) The range of marks.
(b) Mean marks.
(c) The marks of one of students were taken wrong, instead of 62, 26 were taken. Find the actual
mean marks.
Answers
Answered by
3
Answer:
Range= biggest - smallest
Answered by
1
Answer
Total number of values =50
Range = Highest value − Lowest value
=98−8=90
Let us divide the given data into 10 classes.
∴ Length of the Class interval =
Number of class interval
Range
=
10
90
=10
The frequency table of the marks obtained by 50 students in a mathematics test is as follows.
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