A graph that displays data that changes continuously over the periods of time is _________

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Solution

A graph that displays data that changes continuously over the periods of time is Histogram

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Histograms

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Q 2. (ii)Q 2. (i)Q 2. (iii)

Chapter 6: Statistics - Exercise 6.2 [Page 227]

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Samacheer Kalvi Mathematics [English] Class 8 TN Board

Chapter 6 Statistics
Exercise 6.2 | Q 2. (ii) | Page 227

RELATED QUESTIONS

The histogram below represents the scores obtained by 25 students in a mathematics mental test. Use the data to:

Frame a frequency distribution table.
To calculate mean.
To determine the Modal class.

Construct a histogram for the following data:

Monthly school fee (in Rs):	30−60	60−90	90−120	120−150	150−180	180−210	210−240
Number of schools:	5	12	14	18	10	9	4

Find the lower quartile, the upper quartile, the interquartile range and the semi-interquartile range for the following frequency distributions:

Marks	25	30	35	40	45	50
No. of students	6	15	12	10	18	9

Construct histograms for following frequency distribution:

Class Interval	1-10	11-20	21-30	31-40	41-50
Frequency	11	23	30	20	16

Construct a frequency polygon without using a histogram for the following frequency distribution :

Class Interval	10-20	20-40	40-60	60-80	80-100
Frequency	9	17	15	20	14

Construct a frequency polygon without using a histogram for the following frequency distribution :

Class Mark	10	15	20	25	30	35	40
Frequency	4	20	40	45	30	25	5

The marks obtained by 50 students in Mathematics are given below.

(i) Make a frequency distribution table taking a class size of 10 marks

(ii) Draw a histogram and a frequency polygon.

52	33	56	52	44	59	47	61	49	61
47	52	67	39	89	57	64	58	63	65
32	64	50	54	42	48	22	37	59	63
36	35	48	48	55	62	74	43	41	51
08	71	30	18	43	28	20	40	58	49

The graphical representation of ungrouped data is ________

Draw a histogram and the frequency polygon in the same diagram to represent the following data

Weight (in kg)	50 − 55	56 − 61	62 − 67	68 − 73	74 − 79	80 − 85	86 − 91
No. of persons	15	8	12	17	9	10	6

Try yourself

Next time when you watch your favourite TV programme, count the number of advertisements during each break. Use tally marks. Put a dot below the tally when you find children in any advertisement.
Compare with your friends. Do you get different answers?

A graph that displays data that changes continuously over the periods of time is _________

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52	33	56	52	44	59	47	61	49	61
47	52	67	39	89	57	64	58	63	65
32	64	50	54	42	48	22	37	59	63
36	35	48	48	55	62	74	43	41	51
08	71	30	18	43	28	20	40	58	49

52	33	56	52	44	59	47	61	49	61
47	52	67	39	89	57	64	58	63	65
32	64	50	54	42	48	22	37	59	63
36	35	48	48	55	62	74	43	41	51
08	71	30	18	43	28	20	40	58	49

A graph that displays data that changes continuously over the periods of time is _________

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Question

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Solution

52	33	56	52	44	59	47	61	49	61
47	52	67	39	89	57	64	58	63	65
32	64	50	54	42	48	22	37	59	63
36	35	48	48	55	62	74	43	41	51
08	71	30	18	43	28	20	40	58	49