Q.8 The result of a Mathematics test is as follows: 80, 90, 70, 80, 80, 60, 80, 70, 90, 65, 100, 60,
70, 60, 70, 85, 65, 70, 70, 85, 90, 60, 65, 80, 60 Make a frequency table (tally marks) for the
above data and answer the following questions:
(a) What is the maximum marks obtained?
(b) How many students score less than 75 marks?
(c) How many students scored 80 marks or above? (d) How many students appeared in the
test?
Answers
Given: The result of a Mathematics Test
To Find: (1) Make a frequency table
(2) How many students score less than 75 marks.
(3) How many students scored 80 marks or above.
(4) How many students appeared in the test.
Step-by-step explanation:
(1) Marks No. of students Tally Marks
60 5 ||||\
65 3 |||
70 6 ||||\|
75 0 0
80 5 ||||\
85 2 ||
90 3 |||
100 1 |
Total = 25
(2) No. of students who score less tham 75 marks = 5+3+6 = 14
(3) No. of students who score 80 marks or above = 5+2+3+1 = 11
(4) Total no. of students = 25
Step-by-step explanation:
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