Year to date, the broad-based S&P 500 (SNPINDEX: ^GSPC) has advanced 13%, and the technology-heavy Nasdaq Composite (NASDAQINDEX: ^IXIC) has added 15%. In the event of a stock market crash, the smartest move investors can make is to buy the dip, particularly after the S&P 500 and Nasdaq Composite have closed in correction territory. PCE inflation has cooled slightly since then, but projections from the Cleveland Fed show the metric trending toward 3.8% in August. The next interest rate increase will signal the beginning of a new tightening cycle, and history says it could trigger a stock market correction. However, the stock market could drop more sharply than those figures suggest this year because of the midterms.