Question 5 (i) 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 isas follows: 0.030.080.080.090.040.170.160.050.020.060.180.200.110.080.120.130.220.070.080.010.100.060.090.180.110.070.050.070.010.04 (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.
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Solution
Taking class intervals as 0.00−0.04, 0.04−0.08, and soon, a grouped frequency table can be constructed as follows. ConcentrationofSO2(inppm)Numberofdays(frequency)0.00−0.0440.04−0.0890.08−0.1290.12−0.1620.16−0.2040.20−0.242Total30