Question 1 - Page 98 - Statistical Question & Statement - Chapter 5 Class 7 - Connecting the Dots... (Ganita Prakash II)

Transcript

Question 1 - Page 98 Which of the following are statistical questions? (a) What is the price of a tennis ball in India? (b) How old are the dogs that live on this street? (c) What fraction of the students in your class like walking up a hill? (d) Do you like reading? (e) Approximately how many bricks are in this wall? (f) Who was the best bowler in the match yesterday? (g) What was the rainfall pattern in Barmer last year?Let’s answer one-by-one (a) Price of a tennis ball in India? Prices vary across different shops and cities. Thus, it is a statistical statement (b) Age of dogs on this street? Each dog will have a different age. Thus, it is a statistical statement (c) Fraction of students who like walking up a hill? You’d need to survey many students. Thus, it is a statistical statement (d) Do you like reading? This is just a "yes/no" for one person. Thus, it is not a statistical statement (e) How many bricks in this wall? There is one exact number of bricks. Thus, it is not a statistical statement (f) Who was the best bowler yesterday? Usually based on one specific match's score. Thus, it is not a statistical statement (g) Rainfall pattern in Barmer last year? Rainfall changes every day/month. Thus, it is a statistical statement