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Naman Mathur
Subject: Maths
, asked on 23/3/18
Solution of example 6 of statistics of maths ncert book
Answer
1
Ayush
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
Answer
1
Champ Jee
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:
Answer
4
Prachi Attresh
Subject: Maths
, asked on 23/3/18
Question no. 2
2.
For the following distribution :
Find the modal class.
Answer
2
Chirag Aggarwal
Subject: Maths
, asked on 22/3/18
Derieve the formula of finding the mode of a grouped data.
Answer
1
Satya Saran Patra
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.
Answer
1
Krithi ♀️
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
Answer
6
Krithi ♀️
Subject: Maths
, asked on 18/3/18
Plz answer quickly
Answer
1
Vishakha
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
Answer
1
Zaid Khan
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
Answer
1
Vishakha
Subject: Maths
, asked on 2/3/18
please solve 20th question
Answer
3
Nikhil Mittal
Subject: Maths
, asked on 28/2/18
Find the mean of first 30 natural numbers?
Answer
2
Aayushi Rohilla
Subject: Maths
, asked on 27/2/18
Question 4
4.
Find the values of
f
and F in the following data:
Answer
2
Champ Jee
Subject: Maths
, asked on 25/2/18
I dont think the calculation is correct here.
Answer
1
Krisha 💫
Subject: Maths
, asked on 25/2/18
Q.15. The median of the following data is 50. Find the value of P and q, if the sum of all the frequencies is 90:
Answer
2
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What are you looking for?

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 ?

(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:

2.For the following distribution :Find the modal class.

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.

Q. Calculate the median of the following

Q2. During the medical check-up of 35 student of a class, their weights were recorder as follows:

Less than 40

Less than 42

Less than 44

Less than 46

Less than 48

Less than 50

Less than 52

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

4.Find the values offand F in the following data: