Lecture 04 (Part 2)

What is an advantage of using Nonparametric Statistics?

• a. It can handle data that is not normally distributed.
• b. It requires a smaller sample size than Parametric Statistics.
• c. It can be used to test hypotheses about population parameters.
• d. It is less time-consuming than Parametric Statistics.

Spearman’s rho is used to measure...

• Pearson’s correlation on the metric data

• Pearson’s correlation on the continuous data

• Pearson’s correlation on the ranked data

• Correlation between two metric variables

The point-biserial correlation is a Pearson correlation ...

• when the dichotomous variable is coded with 0 for one category and 1 for the other.

• when the dichotomous variable is coded with 2 for one category and 3 for the other.

• when the continuous variable is coded with 0 for one category and 1 for the other.

• when the ranked variable is used.

If a researcher has a data where students' data are collected where they are Passing or Failing a subject, but there are students who fail by a large margin, some who just pass, while others pass by a large margin, correlation is measured by...

• Spearman's rho

• the point biserial correlation

• Kendall's tau

• the biserial correlation

______ measures the relationship between two variables, adjusting for the effect that a third variable has on them both.

• Pearson's correlation coefficient

• Partial Correlation

• Semi-partial correlation

• Biserial correlation

There are three variables, A, B, and C. If you want to measure the relationship between two variables while adjusting for the effect that one or more additional variables have on one of those variables, you will use.... .

• Spearman's rho.

• correlation.

• partial correlation

• semi-partial correlation