A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows:
$0.03 0.16 0.11 0.08 0.11 0.08 0.05 0.08 0.01 0.07 0.08 0.02 0.12 0.10 0.05 0.09 0.06 0.13 0.06 0.07 0.04 0.18 0.22 0.09 0.01 0.17 0.20 0.07 0.18 0.04$

(i) Make a grouped frequency distribution table for this data with class intervals as $0.00 - 0.04, 0.04 - 0.08$ , and so on.
(ii) For how many days, was the concentration of sulphur dioxide more than $0.11$ parts per million?

Question

A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows:

0.03 0.16 0.11 0.08 0.11 0.08 0.05 0.08 0.01 0.07 0.08 0.02 0.12 0.10 0.05 0.09 0.06 0.13 0.06 0.07 0.04 0.18 0.22 0.09 0.01 0.17 0.20 0.07 0.18 0.04

(i) Make a grouped frequency distribution table for this data with class intervals as

0.00 - 0.04, 0.04 - 0.08

, and so on.
(ii) For how many days, was the concentration of sulphur dioxide more than

0.11

parts per million?

Filo · Accepted Answer

Concentration ofsulphur dioxide (in ppm)Frequency  0.00 - 0.04 4 0.04 - 0.08 9 0.08 - 0.12 9 0.12 - 0.162  0.16 - 0.20 4 0.20 - 0.24 2 Total 30(i) The figure above is the grouped frequency distribution.(ii) The number of days for which concentration of SO2​ is more than 0.11→0.12−0.16,0.16−0.20,0.20−0.24∴ Total number of days =2+4+2=8 days.

Question Text	A study was conducted to find out the concentration of sulphur dioxide in the air in parts per million (ppm) of a certain city. The data obtained for 30 days is as follows: $0.03 0.16 0.11 0.08 0.11 0.08 0.05 0.08 0.01 0.07 0.08 0.02 0.12 0.10 0.05 0.09 0.06 0.13 0.06 0.07 0.04 0.18 0.22 0.09 0.01 0.17 0.20 0.07 0.18 0.04$ (i) Make a grouped frequency distribution table for this data with class intervals as $0.00 - 0.04, 0.04 - 0.08$ , and so on. (ii) For how many days, was the concentration of sulphur dioxide more than $0.11$ parts per million?
Answer Type	Text solution:1
Upvotes	150

Text solutionVerified

Practice questions from similar books

Concentration of sulphur dioxide (in ppm)	Frequency
0.00 - 0.04	4
0.04 - 0.08	9
0.08 - 0.12	9
0.12 - 0.16	2
0.16 - 0.20	4
0.20 - 0.24	2
Total	30