Question

To study the detection of sulfur dioxide (SO2) in a city environment in ppm
Come on. Here is the information received in 30 days.

0.03, 0.08, 0.08, 0.09, 0.04, 0.17, 0.16, 0.05, 0.02, 0.06, 0.18, 0.20, 0.11, 0.08, 0.12,

0.13, 0.22, 0.07, 0.08, 0.01, 0.10, 0.06, 0.09, 0.18, 0.11, 0.07, 0.05, 0.07, 0.01, 0.04

Based on this information,

(i) 0.00-0.04, 0.04-0.08. Etc. Take classes and prepare a classified version-distribution table.

(ii) For how many days will the concentration of SO2 be more than 0.11 ppm?​

Answer 1

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

(i) The figure above is the grouped frequency distribution.

(ii) The number of days for which concentration of SO

2

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.