MCQExams
0:0:1
CBSE
JEE
NTSE
NEET
Practice
Homework
×
CBSE Questions for Class 8 Maths Introduction To Graphs Quiz 2 - MCQExams.com
CBSE
Class 8 Maths
Introduction To Graphs
Quiz 2
In which city number of people watching T.V is same as people reading newspaper?
Report Question
0%
Delhi
0%
Mumbai
0%
Kolkata
0%
Patna
Explanation
In Kolkata people watching T.V is same as reading newspaper i.e $$30$$
$$\therefore$$ Correct answer is option $$C$$.
What is the ratio of the total sales of laptop in Kerala state for both years to the total sales of laptop in Gujarat state for both years?
Report Question
0%
$$8:13$$
0%
$$13:8$$
0%
$$8:5$$
0%
$$5:8$$
Explanation
Sales of laptop in Kerala state $$= 6 + 20 = 26$$
Sales of laptop in Gujarat state $$= 12 + 4 = 16$$
So, the ratio $$=$$ $$\dfrac{26}{16}$$
Ratio $$= 13:8$$
Name the graph which is used to represent data in discrete manner?
Report Question
0%
pie
0%
histogram
0%
bar
0%
frequency polygon
Explanation
The bar graph is used to represent data in a discrete manner.
An example is shown above.
In a bar chart, the ______ are represented by the heights of the bars.
Report Question
0%
variables
0%
weights
0%
frequencies
0%
constant
Explanation
In a bar chart, the frequencies are represented by the heights of the bars.
Example:
In which graph, frequency is represented by the area of each rectangle?
Report Question
0%
bar
0%
pie
0%
line
0%
histogram
Explanation
In the histogram, the frequency is represented by the area of each rectangle.
An example is shown in the figure.
The line graph shows the income of RBI department. In which of the years was the annual income the maximum?
Report Question
0%
$$1996$$
0%
$$1999$$
0%
$$2000$$
0%
$$2001$$
Explanation
In graph shows the income of the RBI department was maximum in the year $$1999$$.
The line graph shows the number of students in each department of a school. What does the second number in the ordered pair $$(9, 10)$$ represent?
Report Question
0%
Number of department
0%
Line graph
0%
Number of students
0%
School department
Explanation
The second number in the ordered pair $$(9, 10)$$ represent $$10$$ number of students in the department $$9$$.
The line graph shows the income of RBI department. In which of the years was the annual income the minimum?
Report Question
0%
$$1995$$
0%
$$1999$$
0%
$$2000$$
0%
$$2001$$
Explanation
In graph shows the income of the RBI department was minimum in the year $$1995$$.
The width of the bars does not matter in _____ graph.
Report Question
0%
line
0%
histogram
0%
pie
0%
bar
Explanation
The width of the bars does not matter in bar graph.
Which is a two dimensional graph?
Report Question
0%
pie
0%
bar
0%
histogram
0%
frequency curve
Explanation
A histogram is a two dimensional graph. Shown in the figure above is a histogram.
Hence, option C is correct.
The line graph shows the number of students in each department of a school. What does the first number in the ordered pair $$(8, 30)$$ represent?
Report Question
0%
Number of department
0%
Line graph
0%
Number of students
0%
School department
Explanation
The first number in the ordered pair $$(8, 30)$$ represent $$8$$ number of departments.
The frequency curve shows the number of students ages $$11$$ through $$17$$ in Chennai city that have mobile phones. Refer to the frequency curve below to answer each question.
How many mobile phones do $$13$$ year-old have?
Report Question
0%
$$10$$
0%
$$15$$
0%
$$20$$
0%
$$25$$
Explanation
$$13$$ year-old have $$15$$ mobile phones as shown in the graph.
The frequency curve shows temperatures over $$11$$ year in Bangalore. Use the graph to answer the questions below.
Which year had the lowest temperature?
Report Question
0%
$$2001$$
0%
$$2000$$
0%
$$2002$$
0%
$$2010$$
Explanation
The graph shows that the lowest temperature is in the year $$2000$$.
Find the highest temperature in Bangalore over $$11$$ years.
Report Question
0%
$$25^{o}C$$
0%
$$45^{o}C$$
0%
$$30^{o}C$$
0%
$$15^{o}C$$
Explanation
On looking the graph, we get the highest temperature as $$45^{o}C$$ in the year $$2002$$.
What is the difference in temperature between $$2003 $$ and $$2008$$?
Report Question
0%
$$25^{o}C$$
0%
$$30^{o}C$$
0%
$$15^{o}C$$
0%
$$5^{o}C$$
Explanation
In $$2003$$ temperature $$=$$ $$30^{o}C$$
In $$2008$$ temperature $$=$$ $$25^{o}C$$
So, the difference $$= 30 - 25 =$$ $$5^{o}C$$
The frequency curve is similar to _____.
Report Question
0%
histogram graph
0%
line graph
0%
bar graph
0%
pie graph
Explanation
The frequency curve is similar to line graph.
Because both the graph represents the data in line segment.
What is the range of temperatures in Bangalore over $$11$$ years?
Report Question
0%
$$20^{o}C$$
0%
$$10^{o}C$$
0%
$$33^{o}C$$
0%
$$45^{o}C$$
Explanation
Range of temperature = highest temperature $$-$$ lowest temperature
$$= 45 - 12 =$$ $$33^{o}C$$
So, the range of temperatures in Bangalore over $$11$$ years is $$33^{o}C$$.
How many years have temperature higher than $$35^{o}C$$?
Report Question
0%
$$2$$
0%
$$3$$
0%
$$4$$
0%
$$5$$
Explanation
Years $$2002$$ and $$2005$$ are having the temperature higher than $$35^{o}C$$.
Thus answer is $$2$$.
At what age do students have the greatest number of mobile phones?
Report Question
0%
$$14$$
0%
$$15$$
0%
$$16$$
0%
$$17$$
Explanation
At the age $$16$$, the students have the greatest number of mobile phones.
In which age students do have the least number of mobile phones?
Report Question
0%
$$11$$
0%
$$12$$
0%
$$13$$
0%
$$14$$
Explanation
$$12$$ years old students have the least number of mobile phones.
How many sets had more even than negative numbers?
Report Question
0%
$$0$$
0%
$$1$$
0%
$$2$$
0%
$$3$$
Explanation
Set A and Set C have more even numbers. Hence the answer is option C.
About how many mobile phones do $$14\dfrac{1}{2}$$ year old have?
Report Question
0%
$$20$$
0%
$$30$$
0%
$$40$$
0%
$$50$$
Explanation
On looking the graph, we can say $$14\dfrac{1}{2}$$ year old have 40 mobile phones.
The annual maintenance cost of a machine in a factory over a $$2$$ year period is represented in the histogram. By how much did the maintenance cost decrease in $$1998-99$$ when compared to $$1994-95$$?
Report Question
0%
$$150$$
0%
$$50$$
0%
$$200$$
0%
$$100$$
Explanation
From the given histogram, we cay say
The maintenance cost decrease in $$1998-99$$ when compared to $$1994-95 = 200 - 100 = 100$$
The following line graph gives the ratio of the amounts of imports by a company to the amount of exports from that company over the period from $$1995$$ to $$2001$$.
The imports were minimum proportionate to the exports of the company in the year ?
Report Question
0%
$$1995$$
0%
$$1996$$
0%
$$1997$$
0%
$$2000$$
Explanation
The imports are minimum proportionate to the exports implies that the ratio of the value of imports to exports has the minimum value.
Now, this ratio has a minimum value $$0.35$$ in $$1997$$
Hence, the imports are minimum proportionate to the exports in $$1997$$.
What was the least number of mobile phones at any age?
Report Question
0%
$$10$$
0%
$$15$$
0%
$$20$$
0%
$$25$$
Explanation
$$10$$ was the least number of mobile phones at any age.
If the imports of the company in 1996 was Rs. 272 crores, the exports from the company in 1996 was ?
Report Question
0%
Rs. 370 crores
0%
Rs. 320 crores
0%
Rs. 280 crores
0%
Rs. 275 crores
Explanation
Ratio of imports to exports in the year 1996 = 0.85.
Let the exports in 1996 = Rs.
x
crores.
Then, $$\displaystyle \frac { 272 }{ x } =0.85\Rightarrow x=\frac { 272 }{ 0.85 } =320$$
$$\displaystyle \therefore $$
Exports in 1996 = Rs. 320 crores.
The histogram shows the points scored by Reena's friends in a game. How many of her friends scored less than $$40$$ points?
Report Question
0%
$$20$$
0%
$$31$$
0%
$$15$$
0%
$$10$$
Explanation
On looking the graph, we would say the total score less than $$40 = 14 + 12 + 5 = 31$$
Brain and Jared live in the same apartment complex and they both bike to and from the work every day. The figure above shows a typical commute home for each of them. Based on the figure, which of the following statements is true?
Report Question
0%
It takes Brain longer to bike home because his work is farther away.
0%
It takes Jared longer to bike home because his work is farther away.
0%
Jared and Brain arrive home at the same time, so they must bike at about the same rate.
0%
Jared bikes a longer distance than Brain in the same amount of time, so Jared must bike at a faster rate.
Explanation
$$\Rightarrow$$ In the given figure we can see Jared's distance between workplace and the apartment is more than Brain's.
$$\Rightarrow$$ Jared takes the same time as Brain to travel that distance.
$$\therefore$$ Jared bikes a longer distance than Brain in the same amount of time, so Jared must bike at a faster rate.
Which of the following statements Is true?
Report Question
0%
The x-axis is a vertical line
0%
The y-axis is a horizontal line
0%
The scale on both axes must be the same in a Cartesian plane
0%
The point of intersection between the x-axis and the y-axis is called the origin
Explanation
We know that horizontal axis in the coordinate plane is called the x-axis.
The vertical axis is called the y-axis.
The point at which the two axes intersect is called the origin.
The origin is at 0 on the x-axis and 0 on the y-axis.
And the scale on both axes are not the same in Cartesian plane.
Then, option (D) is true.
What is the average numbers of vehicles manufactured by Company X over the given period ? (rounded off to nearest integer)
Report Question
0%
$$119333$$
0%
$$113666$$
0%
$$112778$$
0%
$$111223$$
Explanation
Average number of vehicles manufactured by Company X
$$\displaystyle =\frac { 1 }{ 6 } \times \left( 119000+99000+141000+78000+120000+159000 \right) $$
$$\displaystyle =119333$$
0:0:1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
0
Answered
0
Not Answered
0
Not Visited
Correct : 0
Incorrect : 0
Report Question
×
What's an issue?
Question is wrong
Answer is wrong
Other Reason
Want to elaborate a bit more? (optional)
Practice Class 8 Maths Quiz Questions and Answers
<
>
Support mcqexams.com by disabling your adblocker.
×
Please disable the adBlock and continue.
Thank you.
Reload page
