The mark scored by 40 candidates in an examination (out of 100 ) is given below .
75 , 65 , 57 , 50 , 32 , 54 , 67 , 75 ,88 , 80 , 42 , 40 , 41 , 34 , 61 , 42 , 46 , 68 , 52 , 43 , 49 , 59 , 49, 67 , 34 , 33 , 87 , 97 , 47 , 46 , 54 , 48 , 45 , 51 , 47 , 41 , 43 .
Prepare a frequency distribution table with the class size 10 . Take the class intervals as 30 - 39 , 40 - 49 and answer the following questions .
Which class intervals have highest and lowest frequency .

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Solution

The class interval $40 - 49$ has highest frequency and $90 - 99$ has the lowest frequency .

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Similar questions

The marks scored by 40 candidates in an examination (out of 100) is given below:

75, 65, 57, 50, 32, 54, 75, 67, 75, 88, 80, 42, 40, 41, 34, 78, 43, 61,

42, 46, 68, 52, 43, 49, 59, 49, 67, 34, 33, 87, 97, 47, 46, 54, 48, 45,

51, 47, 41, 43.

Prepare a frequency distribution table with the class size 10. Take the class intervals as (30 - 39), (40 - 49), … and answer the following question:

(a) Which class intervals have highest and lowest frequency?

(b) Write the upper and lower limits of the class interval 30-39.

40

100

75, 65, 57, 50, 32, 54, 75, 67, 75, 88, 80, 42, 40, 41, 34, 78, 43, 61, 42, 46

68, 52, 43, 49, 59, 49, 67, 34, 33, 87, 97, 47, 46, 54, 48, 45, 51, 47, 41, 43

10

(30 - 39), (40 - 49), . . .

30 - 39

50

100

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