time or how much of something there is ex. 50% milk and 50% water
when you are comparing
A pie chart, also known as a circle graph, shows categorical data using percentages. A bar graph shows categorical data using whole numbers.
first a line graph shows data that is continuous so something that like weather or rain fall
Mathematical information
Various changes over a long period of time.
when you are comparing
Usually a column chart, but it depends on what exactly you want to do and the nature of the data.
The data that can best be represented by a line chart is time series data. This type of data shows how something changes over a long or short period of time.
The type of chart that displays data horizontally is......bar chart
a pie a pie chart compares from a whole known and 100.
A column chart is a good choice for showing trends in data because viewers can easily identify trends by looking at the columns.
pie graph
It is normally near the right end of the Standard toolbar. When you rest the mouse pointer over it, it will say what it is. Another way is to go to the View Menu and Toolbars to see what toolbars are displayed, in case your Standard toolbar is off. There will be a tick beside it to show if it is on or not. You can also customise your toolbars from there.
different type of chart
A scatter chart would be the best candidate to spot trends and extrapolate information based on research data.
A pie chart, also known as a circle graph, shows categorical data using percentages. A bar graph shows categorical data using whole numbers.
That will depend on the type of data and what you are looking for. You could use a line chart but even a bar chart or a scatter graph. ----------- If these are time series data, and assuming that you have sufficient data, I would suggest calculating spectra as a way of identifying possible trends.