Solution:
Following are the data we can collect in our day-to-day life which arearound us
- Number of houses in our housing society.
Monthly grocery expenses of our home.
Number of people who have used e-services of the state govt. over a year.
Number of students who have enrolled for the Math Olympiad in our school.
Population increaseover the decade in our city.
☛ Check: NCERT Solutions for Class 9 Maths Chapter 14
Video Solution:
NCERT Solutions for Class 9 Maths Chapter 14 Exercise 14.1 Question 1
Summary:
Following are the data we can collect in our day-to-day life which are around us: (1) Number of houses in our housing society. (2) Monthly grocery expenses of our home. (3) Number of people who have used e-services of the state govt. over a year. (4) Number of students who have enrolled for the Math Olympiad in our school. (5) Population increase over the decade in our city
☛ Related Questions:
- Classify the data in Q.1 above as primary or secondary data.
- The blood groups of 30 students of Class VIII are recorded as follows:A, B, O, O, AB, O, A, O, B, A, O, B, A, O, O,A, AB, O, A, A, O, O, AB, B, A, O, B, A, B, O.Represent this data in the form of a frequency distribution table. Which is the most common, and which is the rarest, blood group among these students?
- The distance (in km) of 40 engineers from their residence to their place of work was found as follows: 5 3 10 20 25 11 13 7 12 31 19 10 12 17 18 11 32 17 16 2 7 9 7 8 3 5 12 15 18 3 12 14 2 9 6 15 15 7 6 Construct a grouped frequency distribution table with class size 5 for the data given above taking the first interval as 0-5 (5 not included). What main features do you observe from this tabular representation?
- The relative humidity (in %) of a certain city for a month of 30 days was as follows: 98.1 98.6 99.2 90.3 86.5 95.3 92.9 96.3 94.2 95.1 89.2 92.3 97.1 93.5 92.7 95.1 97.2 93.3 95.2 97.3 96.2 92.1 84.9 90.2 95.7 98.3 97.3 96.1 92.1 89 (i)Construct a grouped frequency distribution table with classes 84 -86, 86 -88, etc. (ii)Which month or season do you think this data is about? (iii) What is the range of this data?
