answersLogoWhite

0


Best Answer

To Tell whether which is which.

For example let's say you have a red bar and blue bar, how are people going to know which is which? So that's the purpose of the key.

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the purpose of key for double-bar graph?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

What is the purpose of the key in a bar graph?

The graph key is to make sure everyone understands what things mean, like a map key


What is a graph key in math?

a graph key is when one end of the graph goes into a nother graph and makes baby graphs.


What do you use a key for in a graph?

a key on a graph is used to show you what each symbol means


What is a mystery graph?

A graph whose purpose is inexplicable!


What is the main purpose of line graph?

The main purpose of a line graph is to show changes and patterns in the changes


Why does a pictograph and a double-bar graph have a key?

Every graph must have a key. Keys are to show which bit of the graph represent which data and what values are shown by the location or size or colour of the graph.


Why does a pictograph and a double bar graph have a key?

Every graph must have a key. Keys are to show which bit of the graph represent which data and what values are shown by the location or size or colour of the graph.


What is the purpose for a graph?

its a guideline


When is a key necessary on a graph?

A key can make it easier to interpret the data sets that each part of the graph represents, especially if there is no room in the graph area for labels.


Why do need a Key for a picture graph?

You need a key so people can see what the picture your picture graph uses means.


What is the purpose of a key in a bar graph?

It's so you can tell what the different coloured bars represent. A bit pointless though if there is only one data set.


Why is a graph not sufficient?

It can be - depends on the purpose.