Math, asked by abdulqhadirazhariazh, 4 months ago

To find out the concentration of So, in the air (in parts per million, i.e., ppm), the data
was collected for 30 localities in a certain city and is presented below:
Concentration of So, in ppm)
Frequency
11
0.00 - 0.04
4
0.04 - 0.08
9
0.08 - 0.12
9
0.12 - 0.16
2
4
0.16 - 0.20
2.
0.20 - 0.24
Find the mean concentration of So, in the air.​

Answers

Answered by debasmitakar2006
9

Answer:

Answer:-

Concentration of SO

2

(in ppm) x

i

Frequency

(f

i

) f

i

x

i

0.00-0.04 0.02 4 0.08

0.04-0.08 0.06 9 0.54

0.08-0.12 0.10 9 0.90

0.12-0.16 0.14 2 0.28

0.16-0.20 0.18 4 0.72

0.20-0.24 0.22 2 0.44

Σf

i

=30 Σf

i

x

i

=2.96

mean concentration of SO

2

in the air=

Σf

i

Σf

i

x

i

=

30

2.96

=0.0986≈0.099

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