Home
Class 9
MATHS
Thirty children were asked about the num...

Thirty children were asked about the number of hours they watched TV programmers in the previous week. The results were found as follows:
`1, 6, 2, 3, 5, 12, 5, 8, 4, 8, 10, 3, 4, 12, 2, 8, 15, 1, 17, 6, 3, 2, 8, 5, 9, 6, 8, 7, 14, 12.`
(i) Make a grouped frequency distribution table for this data, taking class width 5 and one of the class intervals as 5-10

Text Solution

Verified by Experts

Frequency distribution table:

(ii) 2 children watched TV for 15 or more hours.
Promotional Banner

Topper's Solved these Questions

  • PRESENTATION OF DATA IN TABULAR FORM

    RS AGGARWAL|Exercise EXERCISE 19|1 Videos
  • PRESENTATION OF DATA IN TABULAR FORM

    RS AGGARWAL|Exercise EXERCISE 29|1 Videos
  • PRESENTATION OF DATA IN TABULAR FORM

    RS AGGARWAL|Exercise EXAMPLE|1 Videos
  • POLYNOMIALS

    RS AGGARWAL|Exercise Multiple Choice Questions (Mcq)|32 Videos
  • PROBABILITY

    RS AGGARWAL|Exercise Multiple Choice Questions (Mcq)|16 Videos

Similar Questions

Explore conceptually related problems

Thirty children were asked about the number of hours they watched TV programmes in the previous week. The results were found as follows: 1 ,6, 2, 3, 5, 12, 5, 8, 4, 8, 10, 3, 4, 12, 2, 8, 15, 1, 17, 6 3, 2, 8, 5, 9, 6, 8, 7, 14, 12 How many children watched television for 15 or more hours a week?

Following are the number of members in 25 families of a village: 6, 8, 7, 7, 6, 5, 3, 2, 5, 6, 8, 7, 7, 4, 3, 6, 6, 6, 7, 5, 4, 3, 3, 2, 5. Prepare a frequency distribution table for the data using class intervals 0-2, 2-4, etc.

The range of the data– 9, 8, 4, 3, 2, 1, 6, 4, 8, 10, 12, 15, 4, 3 is

In a class of 35 students of Geography, following marks were obtained out of 10 marks in unit test -1, 0, 2, 3, 4, 5, 6, 7, 2, 3, 4, 0, 2, 5, 8, 4, 5, 3, 6, 3, 2, 7, 6, 5, 4, 3, 7, 8, 9, 7, 9, 4, 5, 4, 3. Represent the data in the form of a group frequency distribution.

The distance (in km) of 40 engineers from their residence to their place of work were 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 12 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 distance (in km) of 40 engineers from their residence to their place of work were 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 12 Construct a grouped frequency dist

The following data : 2, 5, 15, 25, 20, 12, 8, 7, 6, 16, 21,17, 30, 32, 23, 40, 51, 15, 2, 9, 57, 19, 25 is grouped in the classes 0 –5, 5 –10, 10 –15 etc. Find the frequency of the class 20 –25.

Find the range of { 2 , 7 , 6 , 4 , 3 , 8 , 5 , 12}.