Question 27
Fill in the blanks in the following table which represents shirt size of 40 students fo a school.

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Solution

We use the repetitions to construct a tally table as shown below.The number 1 is represented as I. The number 2 is represented as II and so on. But number 5 is represented as

(i) shows four vertical lines and one intersecting line. It means 4+1, i.e. 5.
(ii) We know that 8 = 5+3 here, 5 is represented by and 3 is represented by III .
(iii) means 5+2, i.e. 7.
(iv) We know that 10 = 5 +5 here, 5 is represented by
So, 10 is represented by
(iv) we know that, 7 = 5+2
Here 5 is represented by

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Marks	0−10	10−20	20−30	30−40	40−50
Number of Students	8	30	40	12	10

Marks	0−10	10−20	20−30	30−40	40−50
No. of Students	8	?	40	?	10

Marks	0−10	10−20	20−30	30−40
Students	15	12	18	5

The following shows the marks obtained by students of a class in a math test (out of 10 marks)

Which of the below statement is wrong as per the above tally marks table?

Marks	10−20	20−30	30−40	40−50	50−60	60−70	70−80	80−90
No. of students	7	13	20	25	10	8	6	1

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