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

R - Quiz(MCQ)

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

A)

phi2poly

B)

poly()

C)

qline()

D)

multi.plot()

Correct Answer : 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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_____ is simplest class of analytics.

A)

Predictive

B)

Prescriptive

C)

Summarization

D)

Descriptive

Correct Answer : Descriptive

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A)

Classification

B)

Clustering

C)

Regression

D)

Summarization

Correct Answer : Classification

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________ is proprietary tool for predictive analytics.

A)

R

B)

EDR

C)

SAS

D)

SSAS

Correct Answer : SAS

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