The relative humidity (in %) of a certain city for a month of 30 days was as follows

The relative humidity (in %) of a certain city for a month of 30 days was as follows
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(i) Construct a grouped frequency distribution table with classes 84-86, 86-88 etc.
(ii) Which month or season do you think this data is about?
(iii) What is the range of this data?