Descriptive Statistics Test 24

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Descriptive Statistics Test 24

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Weekly Quiz Competition

Question 1
1 / -0

The incomplete bar graph shows the number of cookies sold by Raju in $$5$$ days. The total number of cookies sold was $$2,000$$. How many cookies were sold on Sunday?

A
$$750$$

B
$$850$$

C
$$800$$

D
$$950$$

Solution

Given that the total number of cookies sold $$=2000$$
From the given pictograph, Wednesday bar graph shows $$150$$ cookies.
Similarly, Thursday bar graph shows $$350$$ cookies.
Friday bar graph shows $$300$$ cookies.
Saturday bar graph shows $$450$$ cookies.
The total number of cookies sold on Wednesday, Thursday, Friday, Saturday $$= 150+350+300+450=1250$$.
Therefore the number of cookies sold on Sunday $$=2000-1250=750$$
Question 2
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After the reading the pictograph,find the number of TV sets sold in the year $$1990$$ is

A
$$1000$$

B
$$1500$$

C
$$1250$$

D
$$2000$$

Solution

Given that each TV symbol represents $$500$$ TV sets.
In the given pictograph, $$1990$$ year has $$2$$ TV symbols.
Therefore, number of TV sets sold in the year $$1990$$ are $$2\times500=1000$$
Question 3
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Directions For Questions

Answer the following question by reading the given pictograph.

...view full instructions

The year in which the most number of TV sets have been sold is

A
$$1990$$

B
$$1995$$

C
$$2008$$

D
$$2000$$

Solution

From given pictograph, we can observe that the most number of TV sets have been sold in the year 2008. In the year 2008 maximum 500*8=4000 TV sets has been sold compare to other years.
Question 4
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For a series the value of mean deviation is 15.The most likely value of its quartile deviation is

A
12.5

B
11.6

C
13

D
9.7

Solution

use: M.D.$$=\displaystyle \frac{4}{4}\sigma ,Q.D=\frac{2}{3}\sigma $$ $$\displaystyle \Rightarrow \frac{M.D.}{Q.D}=\frac{6}{5}\Rightarrow Q.D.=\frac{5}{6}\left ( M.D. \right )$$

$$MD=\frac { 4 }{ 5 } \times \sigma \quad ,\quad QD=\frac { 2 }{ 3 } \times \sigma \quad ,\quad \\ \frac { MD }{ QD } =\frac { 6 }{ 5 } ,\quad QD\quad =\quad \frac { 5\times 15 }{ 6 } =12.5$$
Question 5
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If one symbol of image(Ref image) Represents $$10$$ bottles of apple juice then $$35$$ bottles of apple juice represented by

A

B

C

D

Solution

$$3$$ full and one half are required to show $$35$$.
Hence the answer is option C
Question 6
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The bar graph shows the number of cakes sold at a shop in four days. What is the difference in number of cakes between the highest and the lowest daily sale?

A
$$20$$

B
$$35$$

C
$$30$$

D
$$40$$

Solution

From the above bar graph, the highest number of cakes sold is $$45$$ (i.e., on Sunday).
and the lowest number of cakes sold is $$25$$ (i.e., on Monday).

Therefore, the difference between the highest and lowest number of cakes $$=45-25=20$$.

Hence, option $$A$$ is correct.
Question 7
1 / -0

The pictogram shows the number of visitors to an exhibition in a particular week. The number of visitors recorded after Wednesday is:

A
$$10$$

B
$$18$$

C
$$60$$

D
$$70$$

Solution

Number of visitors in an exhibition after Wednesday $$=$$ Number of visitors in an exhibition on Thursday + Number of visitors in an exhibition on Friday
Number of visitors in an exhibition after Wednesday $$=$$ $$(6\times 6) + (6\times 4)$$
$$=$$ $$ 36 + 24 = 60$$
Question 8
1 / -0

The incomplete graph shows Dinesh's savings from January to April. Dinesh saved a total of Rs. 730 during the four months. The amount of money saved in February was as much as that saved in March. How much did he save in March?

A
Rs.$$245$$

B
Rs.$$275$$

C
Rs.$$250$$

D
Rs.$$295$$

Solution

From the given graph, Dinesh saved a total of $$160$$ rupees during January month and
An amount of $$80$$ rupees during April month.
Let the savings in February be $$x$$ rupees.
Given that, that amount of money saved in March and February are same.
Therefore, savings in March month $$=x$$ rupees.
Given that, the total amount saved in 4 months $$=730$$ rupees.

$$\implies 160+x+x+80=730$$
$$\implies 240+2x=730$$
$$\implies 2x=730-240=490$$
$$\implies x=\dfrac{490}2=245$$

Therefore, savings in March month $$=245$$ rupees.
Question 9
1 / -0

The bar graph shows the amount of money donated by $$4$$ classes to a charity. How much more money must Class 4P donate so that their amount is the same as that of class 4S?

A
Rs.$$20$$

B
Rs.$$60$$

C
Rs.$$40$$

D
Rs.$$100$$

Solution

From the given bargraph, class $$4P$$ has donated $$60$$ rupees and
class $$4S$$ has donated $$100$$ rupees.
Therefore, class $$4P$$ has to donate $$100-60=40$$ rupees so that their amount is same as that of class $$4S$$.
Question 10
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The following bar graph shows the rainfall at selected locations in certain months.
Which of the following statements is correct

A
November rainfall exceeds $$100$$ cm in each location

B
September rainfall exceeds April rainfall by $$50$$ cm in each location

C
November rainfall is lower than April rainfall in each location

D
None of the above

Solution

The given bar graph shows the rainfall at six different locations 1, 2, 3, 4, 5, and 6 in 3 different months November, April, and September, and the height of each bar for three months at each location gives us the amount of rainfall.
$$\Rightarrow$$ From the heights of bars that rainfall in the month of November is always lower than rainfall in the months of April and September.
$$\therefore$$ From given options, "November rainfall is lower than April rainfall in each location" is a correct statement.