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Which of the following convert a matrix of phi coefficients to polychoric correlations?

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Which of the following convert a matrix of phi coefficients to polychoric correlations?

(a) poly()

(b) qline()

(c) phi2poly

(d) multi.plot()

This question was addressed to me in final exam.

Query is from Linear Regression in portion Commands, Packages, Visualizing Data and Linear Regression of R Programming

1 Answer

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Best answer
Right answer is (c) phi2poly

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.

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