Problem
• Why would you use autocorrelation instead of auto covariance when examine stationary time series versus non-stationary ones?
• When should an analyst use an ARIMA model versus the ARMA model for stationary datasets?
• Discuss some of the analytical challenges of text analysis?
• List the benefits of using TFIDF.
• Comment on methods that can be used for sentiment analysis.
The response should include a reference list. Using double-space, Times New Roman 12 pnt font, one-inch margins, and APA style of writing and citations.