Organizing Data

Q.

What is array?

Q.

Question 4(iii)
The adjoining pie chart gives the marks scored in an examination by a student in Hindi, English, Mathematics, Social Science and Science. If the total marks obtained by the students were 540, answer the following questions:

Examine whether the sum of the marks obtained in Social Science and Mathematics is more than that in Science and Hindi.

Q.

$\begin{array}{cc}\text{Season}& \text{No. of votes}\\ \text{Summer}& 90\\ \text{Rainy}& 120\\ \text{Winter}& 150\end{array}$

A group of 360 people were asked to vote for their favourite season from the three seasons: rainy, winter and summer. Find the central angle of each sector in a pie chart for the above information. [4 MARKS]

Q. For an MCQ question in an examination, the number of students who marked each option is recorded in the form of a bar graph. If the same data is recorded as a pie chart, find the angle that each option would subtend at the center of the chart.


Options

Q.

A shopkeeper sold shoes of the following sizes in a day. Prepare a table using tally marks.$7,5,4,4,6,8,4,4,7,8,5,7,5,8,6,4,8,4,6,7,7,5,5,4,5,4,7,7,6,6,5,4,4,6,5,6,7,8,7,4$

Q.

$$\begin{array}{cc}Colours& No.ofpeople\\ Blue& 18\\ Green& 9\\ Red& 6\\ Yellow& 3\\ Total& 36\end{array}$$

Draw a pie chart showing the given information. The table shows the colours preferred by a group of people. Calculate the respective proportion of each colour and use that proportion to find the central angle. What is the percentage of the colour red?

___

Q.

The weights of newborn babies (in kg) in a hospital on a particular day are as follows:$2.3,2.2,2.1,2.7,2.6.3.0,2.5,2.9,2.8,3.1,2.5,2.8,2.7,2.9,2.4$.

Determine the highest weight.

Q.

If you are given a set of data which has weights of all the students in a class, you will call it organized if-

1. all the weights are arranged in ascending order

2. all the weights are arranged in descending order

3. all the names are arranged in alphabetical order

4. all the names are arranged in reverse alphabetical order

Q. Which of the following dataset are organised?

Data 1 :- {2 , 5 , 61 , 21 , 11 , 15}
Data 2 :- {12 , 5 , 6 , 10 , 11 , 15}
Data 3 :- {2 , 5 , 6 , 16 , 11 , 15}
Data 4 :- {2 , 5 , 6 , 10 , 11 , 15}

1. Data 2
2. Data 1
3. Data 4
4. Data 3

Q.

$\begin{array}{cc}\text{Season}& \text{No. of votes}\\ \text{Summer}& \text{90}\\ \text{Rainy}& \text{120}\\ \text{Winter}& \text{150}\end{array}$

A group of 360 people were asked to vote for their favourite season from the three seasons: rainy, winter and summer. Find the central angle of each sector in a pie chart for the above information. [4 MARKS]

Q.

Question 116(i)

Following is a pie chart showing the amount spent (in Rs thousands) by a company on various modes of advertising for a product.
Now, answer the following questions
Which type of media advertising is greatest amount of the total ?

Q.

The above graph shows the distribution of TV viewership for Zen TV channels in the year 2012-13. If there are 76000 viewers, which of the following is/are true?

1. 30

2. 40

3. 50

4. 60

Q. data is very crucial when we deal with a large set of data.

1. Organizing
2. Scattering
3. Jumbling

Q.

Question 116(ii)

Following is a pie chart showing the amount spent (in Rs thousands) by a company on various modes of advertising for a product.
Now, answer the following questions
Which type of media advertising is least amount of the total ?

Q. The pie chart shows the number of fruits sold in a store. Given that the number of apples is 180 and number of oranges is 400, what is the number of pears sold in the fruit store?

1. 60
2. 70
3. 140
4. 200

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

1. 70
2. 10
3. 18
4. 60

Q. The table shows the number of cups of four different beverages sold by a coffee shop in a certain day. $$\begin{array}{cc}Beverage& Numberofcups\\ Coffee& 60\\ Tea& 75\\ Hotchocolate& 25\\ Milk& 40\end{array}$$
What is the angle of sector in a pie chart representing tea?

1. ${72}^{\circ }$
2. ${108}^{\circ }$
3. ${135}^{\circ }$
4. ${40}^{\circ }$

Q. Which of the following is true for the organized data?

1. Data should be in ascending order only.
2. Data should be in descending order only.
3. Data can be of ascending or descending order.
4. Data should be in random order.

Q.

Using this pictorial representation of the amount of money possessed by 3 friends find the amount of money that Ram has.

1. Rs 100

2. Rs 900

3. Rs 750

4. Rs 375

Q.

In order to analyse and interpret a data set, we should _________ it first.

1. organise

2. remove

3. find

4. visualize

Q. The following pie–chart shows the distribution of students of IIT’s and IIM’s in seven different companies TCS, Wipro, Satyam, Infosys, TATA, Reliance and Birla.


Total number of students from IIT = 23700
Total number of students from IIM = 24700
(A) How many employees of TATA and Birla are students from IIT?
(B) How many employees of Reliance and Satyam are students from IIM?

1. (A) $\to$ 4641; (B) $\to$ 5956
2. (A) $\to$ 3822; (B) $\to$ 8242
3. (A) $\to$ 8643; (B) $\to$ 2525
4. (A) $\to$ 7347; (B) $\to$ 7163

Q. Students of a class voted for their favourite colour and a pie chart was prepared based on the data collected. Which of the following is a reasonable conclusion for the given data?

1. $\frac{1}{20}th$ of the students voted for blue colour.
2. Green is the least popular colour.
3. The number of students who voted for red colour is two times the number of students who voted for the yellow colour.
4. The total number of students whose favourite colour is yellow and green colour is less than the number of students whose favourite colour is red.