Risk-averse investors care greatly about asset price volatility. Using the FRED Notes about the data series, briefly

Question:

Risk-averse investors care greatly about asset price volatility. Using the FRED “Notes” about the data series, briefly define the (VIX) Volatility Index (FRED code:VIXCLS) of the Chicago Board Options Exchange (CBOE). Plot since 2004 the VIX and the percent change from a year ago of the S&P 500 stock market index(FRED code: SP500).Interpret the graph