Why would you use autocorrelation instead of autocovariance when examing stationary time series versus non-stationar

06 Oct Why would you use autocorrelation instead of autocovariance when examing stationary time series versus non-stationar

Posted at 00:38h in Business & Finance / Management by

100 words to each questions

Q1 Why would you use autocorrelation instead of autocovariance when examing stationary time series versus non-stationary ones?

Q2. When should an analyst use an ARIMA model versus the ARMA model for stationary datasets?

Q3. Discuss some of the analytical challenges of text analysis?

Q4. List the benefits of using TFIDF.

Q5. Comment on methods that can be used for sentiment analysis.