0-20, 20-40, 40-60 कैसे वर्ग-अंतराल हैं? | 9 | MATHEMATICS | MATHS | S CHAND | Doubtnut

Following table shows the marks scored by a group of 90 students in a mathematics test of 100 marks. Marks 0-20 20-30 30-40 40-50 50-60 60-70 70-100 No. of Students: 7 10 10 20 20 15 8 Find the probability that marks scored by a student in the class is: at most 60 marks (ii) at least 60 marks (iii)not more than 50 marks

Find the median of the following data: class : 0-10 , frequency :5 , 10-20 , 3 , 20-30 , 4 , 30-40 , 3 , 40-50 , 3, 50-60 , 4, 60-70 , 7 , 70-80 , 9 , 80-90 , 7 , 90-100 , 8 ,

2:4:8 : 10:20:40 :: 3:6:9 : ?

The corner points of the feasible region determined by the system of linear constraints are (0, 0), (0, 40). (20, 40), (60, 20). (60, 0). "The objective function is Z = 4x + 3y . Compare the quantity in Column A and Column B. {:("Column A", "Column B"),("Maximum of Z",325):}

The following table gives the marks scored by 100 students in an entrance examination. Marks:, 0-10, 10-20, 20-30, 30-40, 40-50, 50-60, 60-70, 70-80 No. of Students (Frequency):, 4, 10, 16, 22, 20, 18, 8, 2

If the median of the following data is 32.5, find the missing frequencies. Class interval: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 Total Frequency: f_1 5 9 12 f_2 3 2 40

The following frequency distribution shows the distance (in metres) thrown by 68 studentsin a Javelin throw competition.Distance (in m) 0-10,10-20 20-30 30-40 40-50 50-60 60-70 Number of students 4 5 13 20 14 8 4

Write the median class for the following frequency distribution: Class-interval: 0-10 10-20 20-30 30-40 40-50 50-60 60-70 70-80 Frequency: 5 8 7 12 28 20 10 10