 Hi and welcome to the session. Let us discuss the following question. The question says that relative humidity in percent of a certain city for a month or 30 days was as follows 98.1, 98.6, 99.2, 90.3, 86.5, 95.3, 92.9, 96.3, 94.2, 95.1, 89.2, 92.3, 97.1, 93.5, 92.7, 95.1, 97.2, 93.3, 95.2, 97.3, 96.2, 92.1, 84.9, 93.2, 95.7, 98.3, 97.3, 96.1, 92.1, 89. First part is construct a group frequency distribution table with classes 84 to 86, 86 to 88, etc. Second part is which month or season do you think this data is about? Third part is what is the range of this data? Next now begin with the solution. In the first part we have to construct a group frequency distribution table with classes 84 to 86, 86 to 88, etc. Let us make a table now. We have made two columns one for relative humidity other for frequency as 84 to 86, 86 to 88, etc. The minimum value here is 84.9 and maximum value is 99.2. So we take classes as 84 to 86, 86 to 88, 88 to 89, sorry, 88 to 90, 90 to 92, 92 to 94, 94 to 96, 96 to 98, 98 to 100. Quency column. We know that frequency means the number of times an observation occurs in a given data. Now look at the data. Our first interval is 84 to 86. Only 84.9 is covered in this interval. So frequency for the interval 84 to 86 is 1. Now again look at the data. Our second interval is 86 to 88. Only 86.5 is covered in this interval. So frequency is 1. The third interval is 88 to 90. Now 89.2, so frequency is 90.3 and 90.2 is covered in this interval. So frequency is 2. Now next interval is 92 to 93, 93.5, 92.7, 93.3 and 92.1. Again 92.1 are covered in this interval. So frequency of 92 to 94 is 7. Next interval is 94 to 96, 95.3, 94.2, 95.1, 90.2, 90.7 are covered in this interval. So frequency is similarly we will fill the frequency of these two intervals. Frequency of interval 96 to 98 is 7 and frequency of last interval is 4. Adding all these frequencies we get 30. This is our required table. So this completes the first part. Let's now move on to the second part. Second part says which month or season do you think this data is above. The data appears to be taken in the rainy season as the relative humidity is high. This completes the second part. Let's now move on to the third part. Third part says what is the range of this data. Now range is the difference between maximum and minimum value. Here the maximum value is 99.2 and minimum value is 84.9. The difference is equal to 14.3. This is our required answer. So this completes the session. Bye and take care.