Selina Concise Class 6 Math Chapter 31 Data Handling Exercise 31A Solution
EXERCISE 31A
(1) (i) The highest marks scored = 85
(ii) The lowest marks scored = 22
(iii) The range of marks = (85 – 22) = 63
(3) (i) Data: Each number collected for giving required information is called data.
(ii) Frequency of an observation: For any data given in the first column, the corresponding number in the third column is called its frequency.
(4) (i) highest value = 6.1
(ii) Lowest value = 5.1
(iii) Range value = (6.1 – 5.1) = 1
(5)
(6)
(7)
(8)
(i) Numbers are less than 19 = 14
(ii) Numbers are more than 20 = 2
(iii) 19
(9)
(i) Range of the numbers = (62 – 42) = 20
(ii) Numbers are greater than 50 = 9
(iii) Numbers are between 40 and 50 = 4