MARKS 75 80 85 90 95 100
NO.Of students 7 11 25 13 6 3
Construct a histogram from the above distribution of total marks obtained by 65 students of class 9 in half yearly examination

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Solution

The read histogram
No. of students $75$ $80$ $85$ $90$ $95$ $100$
Marks $7$ $11$ $25$ $13$ $6$ $3$

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Construct a histogram from the following distribution of total marks obtained by 65 students of X class in the final examination

$\begin{matrix} M a r k s (m i d - p o i n t s) : & 150 & 160 & 170 & 180 & 190 & 200 N o . o f s t u d e n t s & 8 & 10 & 25 & 12 & 7 & 3 \end{matrix}$

Q. Find the median of the following data.

Maths marks	$60 - 65$	$65 - 70$	$70 - 75$	$75 - 80$	$80 - 85$	$85 - 90$	$90 - 95$
No. of students	$8$	$12$	$14$	$8$	$5$	$6$	$4$

Q. Obtain the A.M of the following data.

Marks	$65$	$70$	$75$	$80$	$85$	$90$	$95$	$100$
Number of students	$6$	$11$	$3$	$5$	$4$	$7$	$10$	$4$

Q. Construct a histogram for the marks obtained by

600

students in the VII class annual examinations.

Marks	$360$	$400$	$440$	$480$	$520$	$560$
No. of students	$100$	$125$	$140$	$95$	$80$	$60$

The marks (out of

100

) obtained by group of students in a science test are

85, 76, 90, 85, 39, 48, 56, 95, 81

and

75.

Find the:

1)Highest and lowest marks obtained by students.

2)Mean marks obtained.

3)No. of students who obtained marks more than mean marks.

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MARKS 75 80 85 90 95 100 NO.Of students 7 11 25 13 6 3Construct a histogram from the above distribution of total marks obtained by 65 students of class 9 in half yearly examination

The read histogram No. of students 75 80 85 90 95100 Marks 7 1125 13 6 3

MARKS 75 80 85 90 95 100
NO.Of students 7 11 25 13 6 3
Construct a histogram from the above distribution of total marks obtained by 65 students of class 9 in half yearly examination

The read histogram
No. of students $75$ $80$ $85$ $90$ $95$ $100$
Marks $7$ $11$ $25$ $13$ $6$ $3$