Question

Describe point biserial correlation and phi coefficient

Answer 1

Answer:

POINT BISERIAL CORRELATION:

The point biserial correlation coefficient, rpbi, is a special case of Pearson's correlation coefficient. It measures the relationship between two variables: One continuous variable (must be ratio scale or interval scale).

PHI COEFFICIENT:

In statistics, the phi coefficient (or mean square contingency coefficient and denoted by φ or rφ) is a measure of association for two binary variables. Introduced by Karl Pearson, this measure is similar to the Pearson correlation coefficient in its interpretation. In fact, a Pearson correlation coefficient estimated for two binary variables will return the phi coefficient.

Step-by-step explanation:

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Answer 2

Explain Below

Step-by-step explanation:

Point biserial correlation coefficient: The point biserial correlation coefficient, rpbi, is a special case of Pearson’s correlation coefficient. It measures the relationship between two variables:

• One continuous variable (must be ratio scale or interval scale).

• One naturally binary variable.*

Phi coefficient: A Phi coefficient is a non-parametric test of relationships that operates on two dichotomous variables.

To learn more

i)Which correlation we have to use for two dichotomous variables?

https://brainly.in/question/3178508

ii)Correlation and correlation types

https://brainly.in/question/13181041