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Presentation of Data
Write down the steps involved in the construction of percentage sub-divided bar diagram.
Following are the steps involved in the preparation of percentage sub-divided bar diagram:
1. Convert the data into percentage form by dividing 100.
2. Cumulative frequency is obtained.
3. Separate bars are prepared for different years. But all the bars have same length or of 100.
4. Then as per cumulative frequency bars are sub-divided into different categories shown by different marks expressed in percentages.
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Data represented through a histogram can help in finding graphically the:
Ogives can be helpful in locating graphically the:
Data represented through arithmetic line graph help in understanding:
Width of bars in a bar diagram need not be equal.
Width of rectangles in a histogram should essentially be equal.
Histogram can only be formed with continuous classification of data.
Histogram and column diagram are the same method of presentaton of data.
Mode of a frequency distribution can be known graphically with the help of histogram.
Median of a frequency distribution cannot be known from the ogives.
What kind of diagrams are more effective in representing the following:
(i) Monthly rainfall in a year.
(ii) Composition of the population of Delhi by religion.
(iii) Components of cost in a factory.
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