Draw a histogram for the following data- Class interval 10-15 15-20 20-25 25 - 30 30-35 35-40- Frequency 30 95 80 55 25 50- -3 marks-

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Standard VIII

Mathematics

Construction of a Histogram for Discontinuous Frequency Distribution

Draw a histog...

Question

Draw a histogram for the following data.
$\begin{matrix} C l a s s i n t e r v a l & 10 - 15 & 15 - 20 & 20 - 25 & 25 - 30 & 30 - 35 & 35 - 40 F r e q u e n c y & 30 & 95 & 80 & 55 & 25 & 50 \end{matrix}$
[3 marks]

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Solution

(0.5 mark for scaling)
(0.5 mark for X-Y axes)
(2 marks for histogram)

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Draw a histogram for the following data.
$\begin{matrix} C l a s s i n t e r v a l & 10 - 15 & 15 - 20 & 20 - 25 & 25 - 30 & 30 - 35 & 35 - 40 F r e q u e n c y & 30 & 95 & 80 & 55 & 25 & 50 \end{matrix}$

Q. Represent the following data by means of a histogram and find out mode.

Weekly wages	:	10-15	15-20	20-25	25-30	30-35	35-40	40-45
No of Workers	:	7	19	27	15	12	12	8

Q. Write the modal class for the following frequency distribution:

Class-interval:	10−15	15−20	20−25	25−30	30−35	35−40
Frequency:	30	35	75	40	30	15

Q. Find the mean of following distribution with step-deviation method to the nearest integer

Class	10 - 15	15 - 20	20 - 25	25 - 30	30 - 35	35 - 40
Frequency	5	6	8	12	6	3

Q. Calculate the arithmetic mean, standard deviation and variance from the following distribution:

Class	:	0-5	5-10	10-15	15-20	20-25	25-30	30-35	35-40
Frequency	:	2	5	7	13	21	16	8	3

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Draw a histogram for the following data. Class interval10−1515−2020−2525−3030−3535−40Frequency309580552550 [3 marks]

(0.5 mark for scaling) (0.5 mark for X-Y axes) (2 marks for histogram)

Draw a histogram for the following data.
$\begin{matrix} C l a s s i n t e r v a l & 10 - 15 & 15 - 20 & 20 - 25 & 25 - 30 & 30 - 35 & 35 - 40 F r e q u e n c y & 30 & 95 & 80 & 55 & 25 & 50 \end{matrix}$
[3 marks]

(0.5 mark for scaling)
(0.5 mark for X-Y axes)
(2 marks for histogram)