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 amp-0-08- amp-0-08- amp-0-09- amp-0-04- amp-0-17 - 0-16 amp-0-05- amp-0-02- amp-0-06- amp-0-18- amp-0-20 - 0-11 amp- 0-08 amp- 0-12 amp-0-13- amp-0-22- amp-0-07 - 0-08 amp-0-01- amp-0-10- amp-0-06- amp-0-09- - amp-0-18 - 0-11 amp-0-07- amp-0-05- amp-0-07- amp-0-01- amp-0-04 - The concentration of sulphur dioxide was more than 0-11 parts per million for 8 days-True-False-

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Standard VIII

Mathematics

Frequency Distribution of Ungrouped Data

A study was c...

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: $\begin{matrix} 0.03 & 0.08 & 0.08 & 0.09 & 0.04 & 0.17 0.16 & 0.05 & 0.02 & 0.06 & 0.18 & 0.20 0.11 & 0.08 & 0.12 & 0.13 & 0.22 & 0.07 0.08 & 0.01 & 0.10 & 0.06 & 0.09 & 0.18 0.11 & 0.07 & 0.05 & 0.07 & 0.01 & 0.04 \end{matrix}$
The concentration of sulphur dioxide was more than 0.11 parts per million for 8 days.

True

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False

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Solution

The correct option is A
True

The readings 0.17, 0.16, 0.18, 0.20, 0.12, 0.13, 0.22, 0.18, are more than 0.11

Hence, for 8 days, the concentration of sulphur dioxideis more than 0.11 ppm.

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Similar questions

Q. 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:

\begin{matrix} 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 \end{matrix}

(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?

Q. 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:

\begin{matrix} 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 \end{matrix}

Using this table, find the probability of the concentration of sulphur dioxide in the interval

0.12 - 0.16

on any of these days.

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 0.08 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

(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?

Q. Given below is the frequency distribution table regarding the concentration of sulphur dioxide in the air in parts per million of a certain city for 30 days.

Conc. of SO₂	0.00-0.04	0.04-0.08	0.08-0.12	0.12-0.16	0.16-0.20	0.20-0.24
No. days:	4	8	9	2	4	3

Find the probability of concentration of sulphur dioxide in the interval
0.12-0.16 on any of these days.

Q. Question 5 (ii)
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:

\begin{matrix} 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 \end{matrix}

(ii) For how many days, was the concentration of sulphur dioxide more than 0.11 parts per million?

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The correct option is A True The readings 0.17, 0.16, 0.18, 0.20, 0.12, 0.13, 0.22, 0.18, are more than 0.11 Hence, for 8 days, the concentration of sulphur dioxideis more than 0.11 ppm.

The correct option is A
True

The readings 0.17, 0.16, 0.18, 0.20, 0.12, 0.13, 0.22, 0.18, are more than 0.11

Hence, for 8 days, the concentration of sulphur dioxideis more than 0.11 ppm.