Data Handling Test

Result

Data Handling Test - 21

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
1 / -0

In a Zonal athletic long jump meet the distances jumped by $$10$$ atheletes are: $$205\:cm, 200\:cm, 275\:cm, 260\:cm, 259\:cm, 199\:cm, 252\:cm, 239\:cm, 228\:cm$$ and $$281\:cm$$. Find the arithmetic mean of the jumps.

A
$$212.4\:cm$$

B
$$222.5\:cm$$

C
$$230.8\:cm$$

D
$$239.8\:cm$$

Solution

Distances jumped by $$10$$ athletes (in $$cm$$): $$205, 200, 275, 260, 259, 199, 252, 239, 228$$ and $$281$$
Mean $$= \cfrac{\text{Sum}}{\text{Number of athletes}}$$
Mean $$= \cfrac{205 +200 +275 +260 +259 +199 +252 +239 + 228 + 281}{10}$$
Mean $$= \cfrac{2398}{10}$$
Mean $$= 239.8$$
Question 2
1 / -0

If the mean of $$7$$,$$9$$,$$11$$,$$13$$,$$x$$,$$21$$ is $$13$$, find the value of $$x$$.

A
$$17$$

B
$$71$$

C
$$15$$

D
$$20$$
Question 3
1 / -0

The ages of $$5$$ children are $$13, 15, 11, 9$$ and $$8$$ years respectively. The average age is

A
$$10.2$$

B
$$12.2$$

C
$$11.2$$

D
$$11$$

Solution

Average is the sum of the data values divided by the total number of values.
Given that, $$13, 15, 11, 9, 8$$ are the ages of $$5$$ children.

Therefore, average age $$=\dfrac{13+15+11+9+8}{5}=\dfrac{56}{5}=11.2$$
Question 4
1 / -0

The horizontal line in a bar graph is called:

A
$$x$$-axis

B
$$y$$-axis

C
Imaginary axis

D
None of these

Solution

In the Cartesian coordinate system, the horizontal reference line is called $$x$$-axis.
Therefore, the horizontal line in a bar graph is called $$x$$-axis.
Hence, option $$A$$ is correct.
Question 5
1 / -0

Find the median of the following data:
$$5, 7, 9, 11, 15, 17, 2, 23$$ and $$19$$

A
$$7$$

B
$$9$$

C
$$11$$

D
$$15$$

Solution

Median is middle score in the ordered data.
Here given data is $$5,7,9,11,15,17,2,23,19$$.
Arranging them in order, we have
$$2, 5, 7, 9, 11, 15,17,19,23$$
Middle score is $$11$$.
Hence, median is $$11$$.
Question 6
1 / -0

The mean of $$3, a+ 2, 8, 12, 2a -1$$ and $$6$$ is $$7$$, find the value of $$a$$.

A
$$2$$

B
$$3$$

C
$$4$$

D
$$5$$

Solution

Given, mean is $$7$$.
Therefore, mean $$=\dfrac {3+a+2+8+12+2a-1+6}{6}$$
$$\Rightarrow 7=\dfrac {30+3a}{6}$$
$$\Rightarrow 42=30+3a$$
$$\Rightarrow 3a=12$$
$$\Rightarrow a=4$$
Question 7
1 / -0

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 8
1 / -0

Find the mode of:
$$7, 7, 8, 10, 10, 11, 10, 13, 14$$

A
$$7$$

B
$$8$$

C
$$10$$

D
$$13$$

Solution

Mode is defined as the maximum number of times an observation appears in the whole set.
Here, by observation, we get that $$10$$ is appearing the maximum (i.e. $$3$$) times and hence this is the mode.
Question 9
1 / -0

In a class test in English $$10$$ students scored $$75$$ marks $$12$$ students scored $$60$$ marks $$8$$ scored $$40$$ marks and $$3$$ scored $$30$$ marks the mode for their score is:

A
$$75$$

B
$$30$$

C
$$60$$

D
$$25$$

Solution

$$\textbf{Step -1: Defining mode.}$$
$$\text{In a given data set, the mode is the value that appears most often among every other values.}$$
$$\text{Given data set says, }$$
$$\text{10 Students scored 75 marks.}$$
$$\text{12 Students scored 60 marks.}$$
$$\text{8 Students scored 40 marks.}$$
$$\text{3 Students scored 30 marks.}$$
$$\textbf{Step -2: Finding the mode of their score.}$$
$$\text{The mode of their score will be the marks occurring most often.}$$
$$\therefore \text{12 Students scored 60 marks.}$$
$$\textbf{Hence, The mode of their score is 60. (Option C)}$$
Question 10
1 / -0

The median of the data 30, 25, 27, 29, 35, 38, 28 is _______.

A
28.5

B
29.5

C
28

D
29

Solution

Arrange the given data in ascending order.
We have, $$25, 27, 28, 29, 30, 35, 38$$
Median is $$29$$

User

Question Analysis

Correct -
Wrong -
Skipped -

My Perfomance

Score
-
out of -
Rank
-
out of -

Re-Attempt Weekly Quiz Competition

Data Handling Test - 21

Result

Data Handling Test - 21

Score

-

Rank

-

SHARING IS CARING

Question 1

$$212.4\:cm$$

$$222.5\:cm$$

$$230.8\:cm$$

$$239.8\:cm$$

Solution

Question 2

$$17$$

$$71$$

$$15$$

$$20$$

Question 3

$$10.2$$

$$12.2$$

$$11.2$$

$$11$$

Solution

Question 4

$$x$$-axis

$$y$$-axis

Imaginary axis

None of these

Solution

Question 5

$$7$$

$$9$$

$$11$$

$$15$$

Solution

Question 6

$$2$$

$$3$$

$$4$$

$$5$$

Solution

Question 7

$$20$$

$$35$$

$$30$$

$$40$$

Solution

Question 8

$$7$$

$$8$$

$$10$$

$$13$$

Solution

Question 9

$$75$$

$$30$$

$$60$$

$$25$$

Solution

Question 10

28.5

29.5

28

29

Solution

User

Question Analysis

My Perfomance

Score

-

Rank

-

Results Announcement on: coming Monday

Stay Tuned: We’ll update you on your result via email or SMS.