Question

What is a Chart/Graph? Explain its advantages.

Hint:

A chart or graph is a pictorial presentation of data. Write three advantages: it helps to explore relationships, helps to present information quickly and helps to convince the reader.

Answer 1

Step 1: Define a chart or graph:
A chart or graph is a pictorial presentation of data.
Numbers from a worksheet are shown as bars, lines, pies or other shapes, so they are easy to read.

Step 2: Advantage 1: Helps to explore:
Often we want to see if two variables are related.
For example, we may ask if a country GNP is related to its infant mortality rate, or if age is related to gender.
It is quicker and easier to draw a chart at once and see the relationship than to page through raw data.

Step 3: Advantage 2: Helps to present:
We want to give information in as little time as possible.
People rarely have time to read long text, so graphs carry and sum up the ideas quickly.
Magazines such as The Economic Times and India Today use graphs for this reason.

Step 4: Advantage 3: Helps to convince:
A graph that can present and explore data can also persuade.
It turns large amounts of information into a display that is easy to use.
Such a display helps the reader accept the point being made.

Step 5: Show the answer in a table:

Part	Point	Marks
Meaning	Pictorial presentation of data	1
Advantage	Helps to explore	1
Advantage	Helps to present	1
Advantage	Helps to convince	1

Final Answer:
A chart or graph is a pictorial presentation of data. Its advantages are that it helps to explore, to present and to convince.