Course Content
Class 9th Math
Online Class For 9th Standard Students (CBSE) (English Medium)
About Lesson

Exercise 14.1 Page: 239

 1. Give five examples of data that you can collect from your day-to-day life.


Five examples from day-to-day life:

  1. Number of students in our class.
  2. Number of fans in our school.
  3. Electricity bills of our house for last two years.
  4. Election results obtained from television or newspapers.
  5. Literacy rate figures obtained from Educational Survey

2. Classify the data in Q.1 above as primary or secondary data.


Primary data: when the information was collected by the investigator herself or himself with a definite objective in her or his mind, the data obtained is called primary data.

Primary data; (i), (ii) and (iii)

Secondary data; when the information was gathered from a source which already had the information stored, the data obtained is called secondary data

Secondary data; (iv) and (v)

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