I would like to do some data analysis and find out how news and tweets influence markets. I would like to begin by investigating how USD does change according to news and various events. But is there any general currency value?
When I am looking for USD rate I get USD/EURO or USD/CHF.
Is it possible to get pure Dollar value to find out only how USD does change not influenced by other markets? Should I use USD/XAU?
Can I use CHF as a base? (it is very stable and doesn't change almost at all) Or something else? (Gold or whatever else?)
EDIT Or maybe US Dollar Index? (DXY)