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Subject: Maths, asked on 23/3/18

CI. fi
0-10. 24
10-20. 15
20-30. 12
30-40. 08
40-50. 17

Find the mode of the given table.

Subject: Maths, asked on 23/3/18

7. For what value of 'k', the mode of the following data is 7?
3, 5, 6, 7, 4, 6, 9, 7, 6, 2k -1, 10, 7, 12
following table.

Subject: Maths, asked on 23/3/18

Solution of example 6 of statistics of maths ncert book

Subject: Maths, asked on 23/3/18

Solve this :

3. The distribution below shows the numbers of wickets taken by bowlers in one-day cricket matches. Find the mean numbers of wickets by choosing a suitable method. What does the mean signify ?
 
Number of wickets 20-60 60-100 100-150 150-250 250-350 350-450
Number of bowlers 7  5 16 12 2 3

Subject: Maths, asked on 23/3/18

In this statistics question, class intervals aren't continuous. Do we need to make them continuous for mean? Just tell if it's necessary or not because the class mark remains same in either cases.
(No need to solve the question)
Q). The following  table gives the life time of 200 bulbs. Calculate the mean life time of a bulb by step deviation method:

Subject: Maths, asked on 23/3/18

Question no. 2

2.  For the following distribution : 
 

Find the modal class.




 

Subject: Maths, asked on 22/3/18

Derieve the formula of finding the mode of a grouped data. 

Subject: Maths, asked on 20/3/18

Pls q2:

2. Mean marks of 40 students in a class is 15. If 20 students had got 2 marks more and the other 20 gets 1 mark less. Find the new mean. 

Subject: Maths, asked on 18/3/18

Q Consider the following distribution of daily wages of 50 workers of a factory . Find the mean of the wages using appropriate method.
 
Daily wages 100-120 120-140 140-160 160-180 180-200
Number of workers 12 14 8 6 10

Subject: Maths, asked on 18/3/18

Plz answer quickly

Subject: Maths, asked on 10/3/18


Q. Calculate the median of the following
Marks obtained No. of students
Below 10 6
Below 20  15
Below 30 29
Below 40  41
Below 50 60
Below 60 70

Subject: Maths, asked on 2/3/18

 
 
2 nd plzz

​Q2. During the medical check-up of 35 student of a class, their weights were recorder as follows:
          
Weight (in kg)  Number of students
Less than 38
Less than 40
Less than 42
Less than 44
Less than 46
Less than 48
Less than 50
Less than 52		           0
          3
          5
          9
         14
         28
         32
         35

         Draw a less than type ogive for the given data. Hence obtain the median weight from the graph and verify the result by using the formula.
   2 nd plzz

Subject: Maths, asked on 2/3/18

please solve 20th question

Subject: Maths, asked on 28/2/18

Find the mean of first 30 natural numbers?

Subject: Maths, asked on 27/2/18

Question 4 

4.  Find the values of  f and F in the following data:   
 

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