8th Grade > Mathematics
DATA HANDLING MCQs
Total Questions : 57
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Answer: Option C. -> May be red or white
:
C
The withdrawn ball may be of red colour or white colour. Since white balls are 30 in number, it is more likely that withdrawn ball will be white incolour. Similarly, it is less likely that ball will be red. We can never be sure that withdrawn ball is of red or white unless all the balls are of same colour.
:
C
The withdrawn ball may be of red colour or white colour. Since white balls are 30 in number, it is more likely that withdrawn ball will be white incolour. Similarly, it is less likely that ball will be red. We can never be sure that withdrawn ball is of red or white unless all the balls are of same colour.
Answer: Option A. -> True
:
A
By definition,the outcome of a random experiment cannot be predetermined by definition.
:
A
By definition,the outcome of a random experiment cannot be predetermined by definition.
Answer: Option D. -> 12
:
D
Probability=Number of favourable outcomesTotal Number of outcomes
Number of white squares (favourable outcomes) = 32
Total number of squares or outcomes = 64
So probability of coin falling in a white square
=Number of white squaresTotal number of squares
=3264
=12
:
D
Probability=Number of favourable outcomesTotal Number of outcomes
Number of white squares (favourable outcomes) = 32
Total number of squares or outcomes = 64
So probability of coin falling in a white square
=Number of white squaresTotal number of squares
=3264
=12
Answer: Option A. -> True
:
A
A bar graph displays information using bars of uniform width and their heights being proportional to the respective frequencies. Thus, the above statement is true.
:
A
A bar graph displays information using bars of uniform width and their heights being proportional to the respective frequencies. Thus, the above statement is true.
Answer: Option D. -> 72∘
:
D
Total expenditure is:
4000 + 2000 + 1500 + 1500 + 1000 = 10,000
Central angle of clothing is
=expenditure on clothingtotal expenditure
=(200010000×360∘)=72∘
:
D
Total expenditure is:
4000 + 2000 + 1500 + 1500 + 1000 = 10,000
Central angle of clothing is
=expenditure on clothingtotal expenditure
=(200010000×360∘)=72∘
:
Bar graph is a graph of rectangles where the height of the bar gives us the quantity we are interested in.Thus, the figure aboverepresents a bar graph.
Answer: Option C. -> 40
:
C
We know that the lower class limit for a class is the lowest value that can go into that class.
So, the lower class limit for the class 40-70 is 40.
:
C
We know that the lower class limit for a class is the lowest value that can go into that class.
So, the lower class limit for the class 40-70 is 40.
Answer: Option A. -> 12
:
A
Total number of Blue Balls= 10-(2+3) =5
Probability of getting Blue Balls
=Number of blue ballsTotal number of balls
=510
=12
:
A
Total number of Blue Balls= 10-(2+3) =5
Probability of getting Blue Balls
=Number of blue ballsTotal number of balls
=510
=12
Answer: Option C. -> 15
:
C
According to the bar graph, we get to know that a girlwhose age is 10 years has a height of 60 inches, if the age is 15 years then the height is 65 inches and lastly if the age is 20 years then the height is 66 inches. Hencethe height of the 15 year old girl is 65 inches.
:
C
According to the bar graph, we get to know that a girlwhose age is 10 years has a height of 60 inches, if the age is 15 years then the height is 65 inches and lastly if the age is 20 years then the height is 66 inches. Hencethe height of the 15 year old girl is 65 inches.