# Free Data Handling 01 Practice Test - 6th grade

Which of the following is correct about data?

A.

Data is collection of numbers.

B.

Data can give us information.

C.

Data is information.

D.

None of these.

#### SOLUTION

Solution : A and B

A data is a collection of numbers gathered to give some information. It should be noted that data and information are not the same thing.

In a birthday celebration, Mango, Vanilla, Chocolate flavoured ice-creams were served. If you want to represent the number of people who like different flavours, the best way to represent it can be given by option___ #### SOLUTION

Solution :

To find out how many people like different flavours, the representation given in Option 1 is difficult to use, as we have to count the number of dots in the circles. Instead, we can use the table given in Option 2, where the number of people and their favourite flavours are tabulated.

From the pictograph given below, who has scored highest number of goals? A.

A

B.

B

C.

C

D.

D

#### SOLUTION

Solution : B

We can see that Player B has the most number of balls in the pictograph i.e. 8 balls. Hence, B is the top scorer as the number of balls in pictograph represents the number of goals scored by the player.

We have marks of different students in three different tables below. Which one of the following is the easiest to analyse?

A)StudentMarks scored (Out of 100)A77B65C93D42E88

B)StudentMarks scored (Out of 100)E88D42C93B65A77

C)StudentMarks scored (Out of 100)D42B65A77E88C93

A. A
B. B
C. C
D. Both A & B

#### SOLUTION

Solution : C

The data in table C is organised.
It is organised in ascending order.
We can easily answer the questions asked from the data in table C as compared to other data sets.

Also, when the number of students is more,  it's almost impossible to analyse the data if it is not organised.
If we store it in alphabetical order, it is hard to determine who scored the least marks or who scored the highest marks.
So A is not always the best way to organise for easy analysis.

In a bar graph, bars have uniform width and spacing between them.

A.

True

B. False

#### SOLUTION

Solution : A

A Bar Graph (also called Bar Chart) is a graphical display of data using bars of different heights.
In a bar graph, bars have uniform width and spacing between them.
If the spacing and width are not uniform, the bar graph is not correctly drawn.

The following pictographs give us the number of guests who visited Pratik's house in the last 4 days. On which day, the number of guests were maximum? On this day, how many more guests came as compared to the previous day? A.

Saturday, 3

B.

Saturday, 0.5

C.

Saturday, 2

D.

Sunday, 0

#### SOLUTION

Solution : B

It is evident from the pictograph that the maximum number of guests came on Saturday i.e. 4 × 2 = 8 guests came on this day (1 picture represent 2 people).

On the previous day, i.e. Friday, number of guests = 2.5 × 2 = 5.

Therefore, difference = 8 - 5 = 3.

In the bar chart below, you have the sales of bikes from ABC company. What is the difference of sales in April and June?
Here the horizontal axis is x-axis which represents months and vertical axis is y-axis which represents number of bikes sold. The scale for x axis is 1 cm = 1 month and y-axis 1 cm = 5 bikes. A.

50 bikes

B.

10 bikes

C.

15 bikes

D.

25 bikes

#### SOLUTION

Solution : A

The height of the bar graph represents the sales in a month.
Sales in April =35 units.
Sales in June =25 units.
So, the difference =3525=10 units.

Difference in sales =10×5=50

Which of the following is/are the correct reason(s) for using pictographs?

A.

They represent data through pictures

B.

It is easy to draw pictographs for any kind of dataset

C.

They look attractive and attract readers' attention

D.

They help us to answer the question on the data easily

#### SOLUTION

Solution : A, C, and D

A pictograph represents data through pictures of objects. It helps answer the questions on the data at a glance. They can be applied to any data set, but it can be difficult in some specific cases. Suppose if you have to represent sales of cars for a company in a year, it will be so difficult to represent data like 39837 or 30001, using pictures.

If the bar graph below represents your pocket money expenditure, what is the activity that takes most of your pocket money?

Here the horizontal axis (x-axis) represents activity and vertical axis (y-axis) represents expenditure. The scale for x-axis is 1 cm = 1 activity and for y-axis is 1 cm = ₹ 100. A.

Mobile Recharge

B.

Eating Outside

C.

Movies

D.

Gaming Centres

#### SOLUTION

Solution : D

The height of the bar graph represents the amount spent for various activity. So, gaming centres expenses have the highest bar which indicates that the amount spent for that activity is largest.

Surveying is a mode of collecting data.

A.

True

B.

False

#### SOLUTION

Solution : A

In surveying, surveyors collect data by examining, observing people and situations. This gives them raw data.