If you are prompted that the Analysis ToolPak is not currently installed on your computer, click Yes to install it. Tip: If Analysis ToolPak is not listed in the Add-Ins available box, click Browse to locate it.
Click the File tab, click Options, and then click the Add-Ins category.These instructions apply to Excel 2010, Excel 2013 and Excel 2016. The visual result sums up the strength of the relationship, albeit at the expense of not providing as much detail as the table above.If the Data Analysis command is not available in your version of Excel, you need to load the Analysis ToolPak add-in program. Lastly, select "Display R-squared value on chart". To add the R 2 value, select "More Trendline Options" from the "Trendline menu. In the dialog box, select "Trendline" and then "Linear Trendline".
To add a regression line, choose "Add Chart Element" from the "Chart Design" menu. We can chart a regression in Excel by highlighting the data and charting it as a scatter plot. The time period under study may not be representative of other time periods.The data is a time series, so there could also be autocorrelation.There are only 20 observations, which may not be enough to make a good inference.Visa is a component of the S&P 500, so there could be a co-correlation between the variables here.With only one variable in the model, it is unclear whether V affects the S&P 500 prices, if the S&P 500 affects V prices, or if some unobserved third variable affects both prices.However, an analyst at this point may heed a bit of caution for the following reasons: From the R-squared, we can see that the V price alone can explain more than 62% of the observed fluctuations in the S&P 500 index.
This indicates that this finding is highly statistically significant, so the odds that this result was caused by chance are exceedingly low.
The bottom line here is that changes in Visa stock seem to be highly correlated with the S&P 500.
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