Explanation:forecast is used for time series analysis. 6. Which of the following convert a matrix of phi coefficients to polychoric correlations ?
A. poly()
B. qline()
C. phi2poly
D. All of the mentioned
Answer:A
Explanation:forecast is used for time series analysis. 6. Which of the following convert a matrix of phi coefficients to polychoric correlations ?
A. poly() B. qline() C. phi2poly D. All of the mentioned
Explanation:In statistics, polychoric correlation is a technique for estimating the correlation between two theorized normally distributed continuous latent variables, from two observed ordinal variables. 7. Which of the following is used to plot multiple histograms ?