Time series data

1.Which one of the following parameters of the HoltWinters() function controls simple

exponential smoothing?

(a) Alpha (b) Gamma

(c) Beta (d) Lambda

2. Which one of the following parameters of the HoltWinters() function controls Holt’s

exponential smoothing?

(a) Alpha and beta (b) Gamma and beta

(c) Beta and lambda (d) None of the above

3. Which one of the following parameters of the HoltWinters() function controls Holt-

Winters exponential smoothing?

(a) Alpha and beta (b) Alpha, beta, and gamma

(c) Beta, gamma and lambda (d) None of the above

4. Describe time series data with respect to time series analysis.

5. What is the difference between univariate and multivariate time series?

6. What are the basic R commands for visualisation of time series data?