Organisation of Raw Data

Q.

Obvious limitation with surveys and questionnaires is ?

Q.

The following pictograph shows the number of absentees in a class of 30 students during the previous week.

1. On which day were the maximum number of students absent?
2. Which day has full attendance?
3. What was the total number of absentees in that week?

Q.

A survey asked the question, “What is the most important thing kids can do to protect the environment ?” The results are shown in the table. Choose a scale for the bar graph of the given data. Draw and label the bar graph for it.

Q.

What information is given by the bar graph? [1 MARK]

Q.

In a bar graph, the heights of the bars are proportional to the respective frequencies of the different categories.

1. True

2. False

Q.

The pictogram shows the number of pupils who cycle to school.

Key: represents $30$ pupils.

What is the total number of pupils who cycle to school?

1. $15$
2. $300$
3. $420$
4. $450$

Q.

The bar graph shows the favourite colours of 20 students in a class. How many more favoured orange than green?

1. 5

2. 2

3. 3

4. 4

Q.

A ___________ helps in answering the questions on the data at a glance

Q. Study the following graph carefully and answer the questions based on it.

(A) By what percentage production of rose in other states is more than that of the Maharashtra?
(B) What is the approximate average production of roses (in thousands) across all the states?
(C) Approximately what percentage of the total rose production is shared by the other states?

Q.

The table shows the number of hand phones sold by Ramesh over a period of 3 days. Given that he sold 150 more hand phones on Tuesday than on Wednesday, which of the following pictograms represents the sales over the 3 days?

$\begin{array}{cc}\text{Day}& \text{Number of hand phones}\\ \text{Monday}& \text{200}\\ \text{Tuesday}& \\ \text{Wednesday}& \text{150}\end{array}$

1. 

   Key::- represents 50 hand phones

2. 

   Key::- represents 50 hand phones

3. 
   Key::- represents 50 hand phones

4. 
   Key::- represents 50 hand phones

Q. The daily rainfall data of a week is shown. What is the total rainfall on Friday, Saturday and Sunday?
(Note: 1 drop = 4 inches)

1. 80

Q.

What pieces of information given below would be useful in determining a football player's performance in a match?
i) Height
ii) Weight
iii) Name
iv) Stamina

1. only (i)

2. (i), (ii)

3. (i), (ii), (iv)

4. (iii), (iv), (v)

Q. A pictograph represents data using .

1. bars
2. symbols
3. x-axis
4. y-axis

Q.

Which among the options is/are the arrangement of the following data as an array?

10, 4, 9, 2, 5, 8, 4, 9

1. 10, 4, 9, 2, 5, 8, 4, 9

2. 2, 4, 4, 5, 8, 9, 9, 10

3. 10, 4, 4, 2, 5, 8, 9, 9

4. 10, 9, 9, 8, 5, 4, 4, 2

Q.

Draw an appropriate bar graph to depict the number of people with different blood groups. [4 MARKS]

$\begin{array}{cc}\text{Blood Group}& \text{No. of People}\\ \text{A}& \text{6}\\ \text{B}& \text{5}\\ \text{AB}& \text{3}\\ \text{O}& \text{1}\end{array}$

Q.

What can be said about the profit of the company (from the following data) which sells tablets?

$\begin{array}{cccccc}\text{Month}& \text{January}& \text{February}& \text{March}& \text{April}& \text{May}\\ \text{No. of tablets solds}& 1100& 981& 645& 1234& 990\end{array}$

1. The profit was maximum in April

2. The profit was maximum in March

3. The profit was same in January and April

4. Nothing can be said about the profit

Q. The pictogram shows the number of pupils who cycle to school.

Key:

represents 30 pupils.
What is the total number of pupils who cycle to school?

1. 300
2. 420
3. 450
4. 15

Q. If the SP of $5$ pens is equal to the CP of $4$ pens, find the gain $\%$ or loss $\%$?

1. $30\%$ loss
2. $20\%$ loss
3. $25\%$ gain
4. $15\%$ gain

Q.

When the following data is arranged as an array(in ascending order), we get:

14, 18, 4, 18, 5, 6, 18, 6, 18

1. 4, 5, 6, 6, 14, 18, 18, 18, 18

2. 4, 5, 6, 6, 14, 18

3. 4, 5, 6, 6, 14, 18, 18, 18

4. 4, 5, 6, 14, 18

Q. A scientist records the length of a fast growing creeper on a bar graph. Using the given graph, calculate the average growth percentage of the creeper from one month to the next.

1. 33.33%
2. 35.22%
3. 36.11%
4. 10%

Q.

The body weighs ( in kg) of 12 children are given below :-

$15,18,12,16,20,16,15,20,18,16,14,17$

The lightest child weighs -

1. $15kg$

2. $11kg$

3. $12kg$

4. $14kg$

Q.

What can be said about the profit of a company, which sells tablets, from the following data?

$\begin{array}{cccccc}\text{Month}& \text{January}& \text{February}& \text{March}& \text{April}& \text{May}\\ \text{No. of tablets solds}& 1100& 981& 645& 1234& 990\end{array}$

1. The profit was maximum in April

2. The profit was maximum in March

3. The profit was same in January and April

4. Nothing can be said about the profit

Q.

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

1. 10

2. 18

3. 60

4. 70

Q.

Raw data is ___.

1. information in a proper organised form

2. information in an unorganised form

3. same as data

4. information which is useless

Q.

If the stars presented to the companies are used to give rating on a scale of 10, then the rating of company C is

1. 1

2. $\frac{1}{2}$
3. $\frac{1}{4}$
4. 2

Q. In the class-interval 7 - 83, 83 is called _____.

1. lower limit
2. upper limit
3. range
4. frequency

Q. If the median of the data set 34, 37, 43, 50, x is 37 then the value of x is always _______.

1. less than 34
2. greater than 50
3. less than or equal to 37
4. lies in between 37 and 43

Q.

State whether the given statement is true or false:

The more data we have regarding something, the less accurate predictions we can draw.

1. True

2. False

Q.

What can be said about the profit of a company, which sells tablets, from the following data?

$\begin{array}{cccccc}\text{Month}& \text{January}& \text{February}& \text{March}& \text{April}& \text{May}\\ \text{No. of tablets solds}& 1100& 981& 645& 1234& 990\end{array}$

1. The profit was same in January and April

2. The profit was maximum in April

3. The profit was maximum in March

4. Nothing can be said about the profit

Q.

For the data $0,1,2,-2,-1$and $0$:

The highest observation____.