Question

A study was conducted to find the concentration of Sulfur dioxide (SO2) in a city

atmosphere in ppm. The information received in 30 days is as follows.

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) Make a grouped frequency distribution table for this class intervals as 0.00-0.04,

0.04-0.08… and so on.

(ii) For how many days will the concentration of SO2be more than 0.11 ppm?​

Answer 1

Given :  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

concentration of Sulfur dioxide (SO2) in a city atmosphere in ppm  for 30 day

To Find : Make a grouped frequency distribution table for this class intervals as 0.00-0.04,

For how many days will the concentration of SO2be more than 0.11 ppm?​

Solution:

Class Interval          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

more than 0.11 ppm  =   0.12 and above

= 2 + 4 + 2

= 8

8 days   the concentration of SO2be more than 0.11 ppm

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Answer 2

Answer:

Given :  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

concentration of Sulfur dioxide (SO2) in a city atmosphere in ppm  for 30 day

To Find : Make a grouped frequency distribution table for this class intervals as 0.00-0.04,

For how many days will the concentration of SO2be more than 0.11 ppm?

Solution:

Class Interval          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

more than 0.11 ppm  =   0.12 and above

= 2 + 4 + 2

= 8

8 days   the concentration of SO2be more than 0.11 ppm

Learn More:

The tally marks |||| represents the number count (a) 5 (b)

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The representation of 'one picture to many objects' in a Pictograph is ...

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