Question

Question 3 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 (ii) Which month or season do you think this data is about? (iii) What is the range of this data?

Class 9 - Math - Statistics Page 245"

Answer 1

1)The maximum and minimum relative humidity in the given raw data are 84.9 and 99.2 .It is given that 84---86 is one of the class intervals and the class size is same .So, the classes of equal size are.



84--86,,,86---88,,,88---90,.......98--100

2)The data appears to be taken in the rainy season the relative humidity is high.

3) Range of this data is 99.2 -84.5==14.3

Hope helped!!!!

Answer 2

B) - the data seem to be taken in the rainy season.
C) - Range =99.2-84.5=14.3