Forbes contributors publish independent expert analyses and insights. I help people communicate data clearly with graphs. This post is motivated by a comment on my blog post Line Charts Are Not Always ...

Microsoft Excel is a powerful spreadsheet platform used to organize and interpret data. With Excel, you make calculations and analyze statistical data based on columns and rows of information. Excel ...

Learn to chart multiple data sets on one graph in Excel with this concise two-minute tutorial. Explore how to utilize more ...

Any equation that can be rearranged into the form \(y = mx + c\), will have a straight line graph. \(m\) is the gradient, or steepness of the graph, and \(c\) is the \(y\)-intercept, or where the line ...

The graphs of \(y = 2x + 1\) and \(y = 2x - 2\) are shown below. The graph of \(y = 2x + 1\) crosses the \(y\)-axis at (0, 1). The graph of \(y = 2x - 2\) crosses the ...

Data visualization is one of the most important tools we have to analyze data. But it’s just as easy to mislead as it is to educate using charts and graphs. In this article we’ll take a look at 3 of ...

A data table alone has no axes, horizontal or otherwise. It consists of points of data; each point describes at least two pieces of information. Other points convey different numerical data about the ...

If you’ve spent any significant time looking at data visualizations–or in a STEM classroom–you’ve probably had this maxim drilled into your head: Correlation does not imply causation. In plain English ...

Steve Blank is a retired serial entrepreneur and has been a founder or participant in eight Silicon Valley startups since 1978. This article originally appeared on his blog. Every startup I see ...