Excel provides useful analysis and charting tools that can help to analyze and understand time series data. These pages present tutorials and workbooks on how to use Excel to analyze and chart time series/ trend data.

1. Regression Analysis with Excel

2. Trend/ Control Charts

3. Temperature Trends

R is an integrated suite of statistical and graphical analysis tools. It is based on the S language which was developed by Bell Laboratories.
These pages present information, resources and tutorials on  R charts.

As an environmental engineer, I have been concerned about the environment since I started working as a water engineer. These pages, combining my data analysis and environmental  interests,  present Excel charts that show global environmental trends.

1. Global Warming

2. Temperature Trends

3. Energy Use

4. Population Trends