7th Grade > Mathematics
DATA HANDLING MCQs
Total Questions : 114
| Page 5 of 12 pages
Answer: Option A. -> 24
:
A
Mean=SumofallobservationsNumberofobservations
=12+86+45+78+23+566
=3006
= 50.
Range = Highest observation - Lowest observation
=86 - 12
= 74
Difference between the mean and range = 74 - 50 = 24
:
A
Mean=SumofallobservationsNumberofobservations
=12+86+45+78+23+566
=3006
= 50.
Range = Highest observation - Lowest observation
=86 - 12
= 74
Difference between the mean and range = 74 - 50 = 24
Answer: Option A. -> organise
:
A
Organised data is easier to analyse and interpret. In data handling, the data is arranged either in ascending or descending order to easily find out the requireddata from the data set.
:
A
Organised data is easier to analyse and interpret. In data handling, the data is arranged either in ascending or descending order to easily find out the requireddata from the data set.
Answer: Option A. -> Thursday
:
A
The heights of the bars that are drawn side by side in the above double bar graph, correspondto the number of men and the number of women who visit the sports complex on each day of the week.
The heights of both the barsare equal on Thursday. So, on Thursday,the numbers of men and women who visited the complex areequal.
:
A
The heights of the bars that are drawn side by side in the above double bar graph, correspondto the number of men and the number of women who visit the sports complex on each day of the week.
The heights of both the barsare equal on Thursday. So, on Thursday,the numbers of men and women who visited the complex areequal.
:
Range is the difference between the observation having the maximum value and the observation having the minimum value.
In the above case,all the observations aresame. So, therange is 50 - 50 = 0.
Answer: Option D. -> All of them will have have same average.
:
D
This is the observation from the bar graph.
Shubh’s total = 85+75+95 = 255
Aman’s total = 85 + 95 + 75 = 255
Anurag’s total = 90 + 80 + 85 = 255
Since total marks are same for all the three, average will be same too. So, there is nobody with the highest average.
:
D
This is the observation from the bar graph.
Shubh’s total = 85+75+95 = 255
Aman’s total = 85 + 95 + 75 = 255
Anurag’s total = 90 + 80 + 85 = 255
Since total marks are same for all the three, average will be same too. So, there is nobody with the highest average.
Answer: Option C. -> 2 and 9
:
C
Mode is the observation that occurs the most number of times. Here,2 and 9 bothoccur two times. Therefore, they both are modes of the data.
:
C
Mode is the observation that occurs the most number of times. Here,2 and 9 bothoccur two times. Therefore, they both are modes of the data.
Answer: Option B. -> False
:
B
The probability of getting head and tail is same i.e. 12. But we can't be sure anyway that we will get head for a certain number of times and tail for a certain number of times.
:
B
The probability of getting head and tail is same i.e. 12. But we can't be sure anyway that we will get head for a certain number of times and tail for a certain number of times.
Answer: Option B. -> 13
:
B
1 occurs once
5 occurs once
6 occurs once
9 occurs twice
13occurs twice
19 occurs once
34 occurs once
45 occurs once
We know that the mode of a set of observations is theobservationthat occurs most often.
Since 9 and 13 both occur twice, they both have the possibility of beingmodes.
But,the mode of the dataset is given to be 13, whichmeans that 13 has to occurmore number of times than 9.
So, the missing number is 13.
:
B
1 occurs once
5 occurs once
6 occurs once
9 occurs twice
13occurs twice
19 occurs once
34 occurs once
45 occurs once
We know that the mode of a set of observations is theobservationthat occurs most often.
Since 9 and 13 both occur twice, they both have the possibility of beingmodes.
But,the mode of the dataset is given to be 13, whichmeans that 13 has to occurmore number of times than 9.
So, the missing number is 13.
Answer: Option B. -> 2 & 3
:
B
The performance of a football player doesn't depend on his name or nationality. Performance solely depends on stamina and height. So, thedata sets which will help us take abetter decision are height and stamina of the players
:
B
The performance of a football player doesn't depend on his name or nationality. Performance solely depends on stamina and height. So, thedata sets which will help us take abetter decision are height and stamina of the players
Answer: Option C. -> Head and tail have equal probability.
:
C
The probability of getting a head or a tail while tossing a coin is 12that is equal for both the cases.
:
C
The probability of getting a head or a tail while tossing a coin is 12that is equal for both the cases.
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