Exercise 14.1 Statistics NCERT Solutions Class 9


Chapter 14 Ex.14.1 Question 1

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

 

Solution

Video Solution

 

Steps:

Think of data we can collect in our day to day life, in and around where we live

  1. Number of houses that own a four-wheeler in our housing society.
  2. Monthly grocery expenses of our family.
  3. Number of people who have used e-services of the state govt over a year.
  4. Number of students who have enrolled for math Olympiad in your class.
  5. Population increase in percentage over the past five years in our city.

Chapter 14 Ex.14.1 Question 2

Identify the data in \(14.1(1)\) above as primary or secondary.

 

Solution

Video Solution

 

Reasoning:

Think how have you collected the data:

  1. Did you collect the data all by yourself investigating around? If yes, primary.
  2. Did you obtain the data from a source where the information has been stored already? If yes, secondary.

Steps:

Based on the observation, data in \(2, 4\) are primary and the data in \(1, 3\) and \(5\) are secondary.

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