Download App

Presentation of Data — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsPresentation of Data6 Marks
Question
Give steps for making frequency polygon.
✓

Answer

A frequency polygon can also be converted back into a histogram by drawing vertical lines from the bounds of the classes shown on the horizontal axis, and then connecting them with horizontal lines at the hieghts of the polygon at each mid-point. Frequency Polygon can be drawn in two ways:Method:
  1. Draw a suitable Histogram as explain in the previous section following all the basic principles.
  2. Get the mid points of the upper horizontal side of each rectangle.
  3. Join these mid points of the adjacent rectangles of the histogram by straight lines.
  4. Ends of the frequency polygon are to be extended to mid point of classes at both sides.
  5. Labelling should be properly done and scale of measurement should be clearly shown.
An example is shown below.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "6 Marks Question" from Presentation of Data→Presentation of Data — all question types→Economics STD 11 Commerce question papers→CBSE Board STD 11 Commerce question papers→CBSE Board question paper generator→

Similar questions

Calculate First Quartile and Third Quartile from the following.
Marks
5-15
15-25
25-35
35-45
45-55
No. of Students
8
12
15
9
6
→
Find the mean deviation and its coefficient from the given data.
Class lnterval Frequency (f)
17.5-22.5 2
22.5-27.5 4
27.5-32.5 6
32.5-37.5 8
37.5-42.5 6
42.5-47.5 4
47.5-52.5 2
52.5-57.5 2
→
The figure alongside shows an economy's production possibility curve for watches and phones. Answer the following questions on the basis of the same:

Image
(i) Identify each of the following combinations of the two goods as either efficient, inefficient or unattainable.
(a) 60 watches and 200 phones
(b) 200 phones and 20 watches
(c) 40 watches and 500 phones
(d) 400 phones and 0 watches
(ii) If the economy decides to produce 80 units of watches on the given production possibility curve AB, how many phones will it be able to produce?
(iii) Suppose the economy is producing 300 phones and 40 watches, but wishes to produce an additional 20 watches. How much output of phones would need to be given up to enable these watches to be made?
(iv) Identify the point in the diagram which represents underutilisation of resources.
(v) How much output of watches need to be sacrificed for producing 200 phones if initially the economy was at point A on the PPC?
(vi) Identify the desirable but unattainable point in the diagram.
→
Find the missing frequency of the group 20-30, if it is given that M = 28.
Class Interval
0-10
10-20
20-30
30-40
40-50
Frequency
5
8
f
16
6
→
Construct a frequency polygon without using histogram for the following data.
Wages (in ₹)
Number of Workers (f)
0-10
10
10-20
18
20-30
35
30-40
30
40-50
20
50-60
12
60-70
8
70-80
3
→
What are the requisites of an ideal average?
→
Write a brief note of National Sample Survey Organisation and also state it's various objectives.
→
Find the standard deviation from the following data:
Marks: $0-10$ $10-20$ $20-30$ $30-40$ $40-50$
No. of Students: $10$ $15$ $10$ $10$ $5$
→
Explain the conditions of consumer's equilibrium with the help of marginal utility analysis
→
In the previous question, calculate the relative measures of variation and indicate the value which, in your opinion, is more reliable.
→