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Question

12 24 36 48 60 72
24 48 60 72 50 30
50 45 50 75 50 34
The number of students in a quiz competition scores are in the table. How many students scored 50 marks?
  1. 4
  2. 5
  3. 8
  4. 3

A
5
B
8
C
4
D
3
Solution
Verified by Toppr

Scores Frequency
12 1
24 2
30 1
34 1
36 1
45 1
48 2
50 4
60 2
72 2
75 1
So, there are 4 students scored 50 marks.

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Q1
12 24 36 48 60 72
24 48 60 72 50 30
50 45 50 75 50 34
The number of students in a quiz competition scores are in the table. How many students scored 50 marks?
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Q2
The score of the students are given below. How many students scored between 30 to 50?



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Q3

The following table gives the marks scored by 100 students in an entrance examination.

Marks0.101020203030404050506060707080No. of students (Frequency)4101622201882

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Q4
The final marks in mathematics of 30 students are as follows:

53, 61, 48, 60, 78, 68, 55, 100, 67, 90,
75, 88, 77, 37, 84, 58, 60, 48, 62, 56,
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(i) Arrange these marks in ascending order, 30 to 39 one group,40 to 49 second group etc.
Now answer the following:
(ii) What is the highest score?
(iii) What is the lowest score?
(iv) What is the range?
(v) If 40 is the passmark, how many have failed?
(vi) How many have scored 75 or more?
(vii) Which observations between 50 and 60 have not actually appeared?
(viii) How many have scored less than 50?


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Q5
The marks obtained by 40 students of a class are given below :
80,10,30,70,60,50,50,40,40,20,40,90,50,30,70,10,60,50,20,70,70,30,80,40,20,80,
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