Gujarat Board Textbook Solutions Class 9 Maths Chapter 14 Statistics Ex 14.1
Gujarat Board Textbook Solutions Class 9 Maths Chapter 14 Statistics Ex 14.1
GSEB Solutions Class 9 Maths Chapter 14 Statistics Ex 14.1
Question 1.
Give five examples of data that you can collect from your day-to-day life.
Solution:
- A number of students in our class.
- A number of fans in our school.
- Electricity bills of our house for the last two years.
- Election results obtained from television or newspaper.
- Literary rate figure obtained from the educational survey.
Question 2.
Classify the data in Q. 1 above as primary or secondary data
Solution:
(i), (ii) and (iii) are primary data, (iv) and (v) are secondary data.
Primary data:
When the information is collected by the investigator herself or himself with a definite
objective is called primary data. These types of data are original and collected for the first time.
Secondary data:
When the information is gathered from a source (like newspaper, TV, or some records) that already had the information stored, the data is called secondary data. Such data has been collected by someone else.
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