What is it?
bar chart is a graphical method of showing the difference between various
discrete categories of data.
histogram is used to show how data is spread across a continuous range
When to use it
- Gathering data
- Analysing data
and testing solutions
What does it achieve?
The bar chart shows
a comparison between different categories. The histogram is used when
data is spread across a continuous range of values.
- In a standard
bar chart items are valued from high to low
- A deviation bar
chart illustrated negative and positive values
- A range bar chart
can show the spread between high and low amounts
- A sliding bar
chart is used when there are only two groups of data
- A 100% bar chart
has all its bars equal length and divided according to the size of
- A grouped bar chart can be used to display two different points
- An overlap bar
chart can be used to highlight further, two different points in time
- The histogram
is used to show data over a continuous range of values