Chapter 1: Data – Its Source and Compilation
Exercises
1. Choose the right answer from the four alternatives given below:
(i) A number or character which represents measurement is called
(a) Digit (b) Data (c) Number (d) Character
Answer:
(ii) A single datum is a single measurement from the
(a) Table (b) Frequency (c) Real world (d) Information
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(iii) In a tally mark grouping by four and crossing fifth is called
(a) Four and Cross Method (b) Tally Marking Method
(c) Frequency plotting Method (d) Inclusive Method
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(iv) An Ogive is a method in which
(a) Simple frequency is measured
(b) Cumulative frequency is measured
(c) Simple frequency is plotted
(d) Cumulative frequency is plotted
Answer:
(v) If both ends of a group are taken in frequency grouping, it is called
(a) Exclusive Method (b) Inclusive Method
(c) Marking Method (d) Statistical Method
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2. Answer the following questions in about 30 words:
(i) Differentiate between data and information.
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(ii) What do you mean by data processing?
Answer:
(iii) What is the advantage of foot note in a table?
Answer:
(iv) What do you mean by primary sources of data?
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(v) Enumerate five sources of secondary data.
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3. Answer the following questions in about 125 words:
(i) Discuss the national and international agencies where from secondary data
may be collected.
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(ii) What is the importance of an index number? Taking an example examine
the process of calculating an index number and show the changes.
Answer: