Trend line analysis of charts in PowerPoint2007

① first insert a chart into the PPT2007, if prompted, then open Excel and then insert the line.

② Select a chart style, which can be a line chart or a line chart, and so on.

③ Click the trendline button in the Chart tool--the Layout tab, and then select the other trendline options.

④ check polynomial, trend forecast can be selected as backward 2 cycles.

⑤ then sets the color of the trendline for easy identification.

Once the ⑥ is OK, the chart generates a trendline that we can use to understand how the chart changes.