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Recent questions tagged Statistics and probability
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finding the percentages of scrapped and rework values
asked
Apr 28
in
Class VIII Maths
by
sekgobela walter
(
10
points)
statistics and probability
0
votes
1
answer
At a petrol pump, it was found that out of 50 vehicles
asked
Oct 21, 2018
in
Class IX Maths
by
muskan15
(
-3,403
points)
statistics and probability
0
votes
1
answer
Out of 125 houses in a locality, 45 donate some part
asked
Oct 21, 2018
in
Class IX Maths
by
muskan15
(
-3,403
points)
statistics and probability
0
votes
1
answer
Tanya, a class IX student received cash award
asked
Oct 21, 2018
in
Class IX Maths
by
muskan15
(
-3,403
points)
statistics and probability
0
votes
1
answer
The percentage of salary donated by twelve different
asked
Oct 16, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
0
votes
1
answer
The following data on the number of girls to the nearest
asked
Oct 16, 2018
in
Class IX Maths
by
muskan15
(
-3,403
points)
statistics and probability
0
votes
1
answer
A survey was conducted on 50 persons of a society
asked
Oct 16, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
–1
vote
1
answer
The class marks of a continuous distribution are 1.04, 1.14, 1.24, 1.34, 1.44,1.54 and 1.64.
asked
Feb 2, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
+1
vote
1
answer
Is it correct to say that in a histogram, the area of each rectangle is proportional to the class size of the corresponding class interval? If not, correct the statement.
asked
Feb 2, 2018
in
Class IX Maths
by
aman28
(
-881
points)
statistics and probability
+1
vote
1
answer
A football player scored the following number of goals in the 10 matches 1, 3, 2, 5, 8, 6,1, 4, 7 and 9. Since, the number of matches is 10 (an even number), therefore
asked
Feb 2, 2018
in
Class IX Maths
by
aman28
(
-881
points)
statistics and probability
0
votes
1
answer
A child says that the median of 3, 14, 18, 20 and 5 is 18. What does not the child understand about finding the median?
asked
Feb 2, 2018
in
Class IX Maths
by
aman28
(
-881
points)
statistics and probability
0
votes
1
answer
In a diagnostic test in mathematics given to students, the following marks (out of 100) are recorded 46, 52, 48, 11, 41, 62, 54, 53, 96, 40, 98 and 44.
asked
Feb 2, 2018
in
Class IX Maths
by
aman28
(
-881
points)
statistics and probability
0
votes
1
answer
The frequency distribution has been represented graphically as follows.
asked
Feb 2, 2018
in
Class IX Maths
by
aman28
(
-881
points)
statistics and probability
0
votes
1
answer
In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips.
asked
Feb 2, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
0
votes
1
answer
In a sample study of 642 people, it was found that 514 people have a high school certificate.
asked
Feb 2, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
0
votes
1
answer
The mode of given data 15, 14, 19, 20, 14, 15, 16, 14, 15, 18, 14, 19, 15,17 and 15 is
asked
Feb 2, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
+1
vote
2
answers
For drawing a frequency polygon of a continuous frequency distribution, we plot the points whose ordinates are the frequencies of the respective classes and abscissae are, respectively
asked
Feb 2, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
0
votes
1
answer
The median of the data 78, 56, 22, 34, 45, 54, 39, 68, 54 and 84 is
asked
Feb 2, 2018
in
Class IX Maths
by
navnit40
(
-4,678
points)
statistics and probability
0
votes
1
answer
The mean of 25 observations is 36. Out of these observations, if the mean of first 13 observations is 32 and that of the last 13 observations is 40, the 13th observation is
asked
Feb 2, 2018
in
Class IX Maths
by
saurav24
Expert
(
1,431
points)
statistics and probability
0
votes
1
answer
There are 50 numbers. Each number is subtracted from 53 and the mean of the number so obtained is found to be – 3.5.
asked
Feb 2, 2018
in
Class IX Maths
by
saurav24
Expert
(
1,431
points)
statistics and probability
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