(2) Find the class-mark of the class 35-40. 3) If clas mark is 10 and class width is 6 then find the class. (4) Complete the following table. Frequency (No. of students) Tally marks Classes (age) 12-13 13-14 14-15 15-16 N NI f-35 (S) In a tree plantation' project of a certain school there are 45 students of 'Harit Sena T record of trees planted by each student is given below : 3. 5. 7, 6, 4. 3. 5. 4. 3. 5, 4. 7. 5 3, 6, 6, 5, 3,4, 5, 7,3, 5, 6, 4, 4, 3, 5. 6. 6, 4, 3. 5. 7. 3. 4, 5. 7. 6, 4. 3. 5, 4, 4, 7.

(2) Find the class-mark of the class 35-40. 3) If clas mark is 10 and class width is 6 then find the class. (4) Complete the following table. Frequency (No. of students) Tally marks Classes (age) 12-13 13-14 14-15 15-16 N NI f-35 (S) In a tree plantation' project of a certain school there are 45 students of 'Harit Sena T record of trees planted by each student is given below : 3. 5. 7, 6, 4. 3. 5. 4. 3. 5, 4. 7. 5 3, 6, 6, 5, 3,4, 5, 7,3, 5, 6, 4, 4, 3, 5. 6. 6, 4, 3. 5. 7. 3. 4, 5. 7. 6, 4. 3. 5, 4, 4, 7. If class mark is 10 and class width is 6 then find the class. (4) Complete the following table. Classes (age) 12-13 13-14 14-15 15-16 Tally marks Illi Frequency (No. of studcntsi f=35 certain school there are 45 students of 'HaritSez