GSEB Class 9 Maths Solutions Chapter 14 Statistics Exercise 14.1

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

1. The total students in our class.
2. The count of fans present in our school.
3. Power bills for our home over the past two years.
4. Voting outcomes gathered from TV or news reports.
5. Literacy numbers found from a learning survey.

Exam Tip: When asked for examples, choose simple, distinct items that clearly fit the given category to score well.

Question 2. Classify the data in Q. 1 above as primary or secondary data
Answer: (i), (ii), and (iii) represent primary data, while (iv) and (v) are secondary data.
Primary data: When an investigator collects information by themselves for a specific aim, it is called primary data. This kind of data is fresh and gathered for the very first time.
Secondary data: When facts are gathered from an existing source, such as a newspaper, TV, or various records that already hold the details, this information is termed secondary data. Someone else has already gathered this type of data.
In simple words: Primary data is what you collect yourself directly. Secondary data is information someone else has already gathered, like from a newspaper.

Exam Tip: Clearly define primary and secondary data and provide specific examples to show your understanding.