Construct a frequency polygon from the following data :
Class-interval Frequency
1 - 5 5
6 - 10 8
11 - 15 12
16 - 20 7
21 - 25 4
Statistics
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Question

Construct a frequency polygon from the following data : | Class-interval | Frequency | | --- | --- | | 1 - 5 | 5 | | 6 - 10 | 8 | | 11 - 15 | 12 | | 16 - 20 | 7 | | 21 - 25 | 4 |

KnowledgeBoat · Accepted Answer

The following frequency distribution table is discontinuous. Convert it into continuous frequency distribution. Adjustment factor = = = 0.5. Subtract the adjustment factor (0.5) from all the lower limits and add the adjustment factor (0.5) to all the upper limits. Continuous frequency distribution table : | Class-interval | Class mark | Frequency | | --- | --- | --- | | 0.5 - 5.5 | 3 | 5 | | 5.5 - 10.5 | 8 | 8 | | 10.5 - 15.5 | 13 | 12 | | 15.5 - 20.5 | 18 | 7 | | 20.5 - 25.5 | 23 | 4 | Steps to draw frequency polygon : 1. Take 2 cm along x-axis = 5 units. 2. Take 2 cm along y-axis = 2 units. 3. Find the mid-point of class intervals. 4. A kink is drawn near x-axis to show that the scale begins at 0.5. 5. Find points corresponding to given frequencies of classes and the mid-points of class-intervals, and plot them. 6. Join consecutive points by line segments. 7. Join first end point with mid-point of class -5.5 - 0.5 with zero frequency and join the other end with mid-point of class 25.5 - 30.5 with zero frequency. The required frequency polygon is shown below:

Weight (in kg)	No. of workers
35 - 40	6
40 - 45	17
45 - 50	30
50 - 55	8
55 - 60	3

Weekly wages (in ₹)	No. of workers
750 - 850	52
850 - 950	41
950 - 1050	65
1050 - 1150	54
1150 - 1250	38

Mathematics

Construct a frequency polygon from the following data :
Class-interval Frequency
1 - 5 5
6 - 10 8
11 - 15 12
16 - 20 7
21 - 25 4

Statistics

Related Questions

Draw a frequency polygon to represent the following data :
Weight (in kg) No. of workers
35 - 40 6
40 - 45 17
45 - 50 30
50 - 55 8
55 - 60 3

Draw a frequency polygon to represent the following data:
Weekly wages (in ₹) No. of workers
750 - 850 52
850 - 950 41
950 - 1050 65
1050 - 1150 54
1150 - 1250 38

The mean of the numbers : 7, 9, 4, 6, 5 is :
5.8
6.0
6.2
6.4

The median of the data 2, 7, 9, 13, 20, 22, 24, 25, 27, 28, 35, 40, is :
24
23
25
27

Mathematics

Construct a frequency polygon from the following data :Class-intervalFrequency1 - 556 - 10811 - 151216 - 20721 - 254

Statistics

Related Questions

Draw a frequency polygon to represent the following data :Weight (in kg)No. of workers35 - 40640 - 451745 - 503050 - 55855 - 603

Draw a frequency polygon to represent the following data:Weekly wages (in ₹)No. of workers750 - 85052850 - 95041950 - 1050651050 - 1150541150 - 125038

The mean of the numbers : 7, 9, 4, 6, 5 is :5.86.06.26.4

The median of the data 2, 7, 9, 13, 20, 22, 24, 25, 27, 28, 35, 40, is :24232527

Construct a frequency polygon from the following data :
Class-interval Frequency
1 - 5 5
6 - 10 8
11 - 15 12
16 - 20 7
21 - 25 4

Draw a frequency polygon to represent the following data :
Weight (in kg) No. of workers
35 - 40 6
40 - 45 17
45 - 50 30
50 - 55 8
55 - 60 3

Draw a frequency polygon to represent the following data:
Weekly wages (in ₹) No. of workers
750 - 850 52
850 - 950 41
950 - 1050 65
1050 - 1150 54
1150 - 1250 38

The mean of the numbers : 7, 9, 4, 6, 5 is :
5.8
6.0
6.2
6.4

The median of the data 2, 7, 9, 13, 20, 22, 24, 25, 27, 28, 35, 40, is :
24
23
25
27