How To Use Excel Graph To Find Unknown

Is there a way for me to have excel calculate this.

How to use excel graph to find unknown. We are suppose to use excel to do so. Double click on the trendline choose the options tab in the format trendlines dialogue box and check the display r squared value on chart box. By default excel shows one numeric value for the label y value in our case. Click the chart elements button. Note the value of r squared on the graph.

Thanks for helping me. Click on the highlighted data point to select it. In excel we usually use chart to show data and trend for more clearly viewing but in sometimes maybe the chart is a copy and you haven t the original data of the chart as below screenshot shown. The absorbance is my y value and the concentration is graphed on the x axis. Using the r squared coefficient calculation to estimate fit.

To let your users know which exactly data point is highlighted in your scatter chart you can add a label to it. How can i determine the concentration of my sample. I have an unknown sample s absorbance and i need to determine the concentration. So we had to do a beer s law plot in my chemistry class. Add unknown data point linear graph excel 2003.

I have created a linear scatter graph in excel 2003 with the intent of finding an unknown x value with a known y value. Now this tutorial is talking about data extracting from a chart or graph. Your graph should now look like figure 6.