 Welcome to the session. Let us just answer the following question. The question says that heights of 50 students measured to the nearest centimeters have been found to be as follows. This is the data given to us. First part is, we present the data given above by a group frequency distribution table, taking the class intervals as 160 to 165, 165 to 170, etc. Second part is, what can you conclude about their heights from the table? Let us now begin with the solution. In the first part, we have to construct a frequency distribution table, taking the class intervals as 160 to 165, 165 to 170, etc. Let us make a table table. We have drawn two columns, one for the height and another for frequency intervals as 160 to 165, 165 to 170 and so forth. Now here, the minimum value is 150 and maximum value is 173. So we take classes as 150 to 155, 155 to 160, 160 to 165, 165 to 170 and 170 to 175. Please remember that in the interval 150 to 155, 155 is not included. It is included in the next interval that is 155 to 160. Similarly, 160 is not included in this interval. It is included in the next interval. So keeping all this in mind, let us now fill the frequency column. The values covered within the interval 150 to 155 are 150, 154, 154, 150, 151, 154, 153, 154, 152, 153, 153, 154. So frequency of the class 150 to 155 is 12. Now we will find the frequency of the class 155 to 160. The values covered within the interval 155 to 160 are 158, 156, 159, 156, 158, 159, 159, 158 and 159. The frequency of the class 155 to 160 is 9. Similarly, we have written the frequency of all other intervals. Some of all these frequencies is 15, which is same as number of students. So this completes the first part. Let us now move on to the second part. Now second part says that what can you conclude about their heights from the table? Now look at the table. Number of students who are shorter than 165 centimeters are 12 plus 9 plus 14, that is 35. So this means more than 50 percent students are shorter than 165 centimeter. So a required answer of the second part says one conclusion that we can draw from the above table is that more than 30 percent of students are shorter than 165 centimeters. This completes the session. Bye and take care. Hope you have enjoyed the session.