Most trends should not be considered significant until they are at least 0.5, or 50%. The closer a trend is to “1,” or 100%, the more accurate it is. In the simplest terms, this describes the trendline’s accuracy. Note the R-squared value on the trendline: Review your chart with the trendline in place.Click the Close button to close the task pane.Click the Display R-squared value on chart checkbox.For a basic trendline indicating the general direction of your data, click the radio button to the left of Linear.Right-click on any data bar in the chart and select Add Trendline from the menu that appears to open the Format Trendline task pane.They are also useful in forecasting future or past values based on available data. Including a trendline in your charts may help illustrate both the size and direction of changes in your data. Trendlines perform calculations behind the scenes and provide an indicator of the direction your data is moving to help make the big picture clear. Sometimes, there are swings in the data that make it difficult to discern if there is an important trend in the information. Charts reveal a great deal about your data in a dynamic and accessible format. With a trendline, you can see if your sales went up, and if so, by how much. Even after graphing the data, it still isn’t clear if production went up or down last year. You have a workbook that contains a full twelve months of production.
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