A trendline in Excel is a line that shows a general trend (upwards/downwards or increase/decline). Thus, it can help in a quick interpretation of the data.

If you're relatively new to Excel, entering a formula is quite easy, even if you have a lot of data. First, highlight the first cell where you want the answer to the formula to appear in.

The TREND function analyzes past data and observes a series' past performance. On the other hand, the FORECAST function predicts a series' future performance. However, both use similar algorithms, ...

I have a set of data, which I charted and then used the 'add trendline' tool to get a decent 2nd order poly. fit with the equation: y = -3E-39x^2 + 4E-19x + 3.4212 However, when I type this ...

Here is my dilemma. I am trying to help a friend add a trendline to an existing graph and control the length of the trendline itself. The graph tracks scores over a date range. The problem is that ...