Kendall Tau Spearman Rho

Which of the following correlation coefficients is used to measure the strength of association between two ranked variables?

• Pearson's correlation coefficient
• Kendall Tau
• Spearman Rho
• Cronbach's alpha

In which situation would Kendall Tau be more appropriate to use compared to Spearman Rho?

• When the variables are measured on an ordinal scale.
• When the variables are measured on a continuous scale.
• When the variables are dichotomous.
• When the variables are normally distributed.

The range of Kendall Tau lies between:

• -1 and 1
• 0 and 1
• -∞ and +∞
• -1/2 and 1/2

What does a Kendall Tau value of 0 indicate?

• No association between the variables.
• A perfect positive association between the variables.
• A perfect negative association between the variables.
• Invalid interpretation, Kendall Tau cannot be 0.

Spearman Rho is a measure of:

• Linear association between two variables.
• Non-linear association between two variables.
• Monotonic association between two variables.
• Causal relationship between two variables.

Spearman Rho is based on the ranks of the data rather than the actual values. This implies that:

• It is only applicable to numerical data.
• It can handle outliers more effectively.
• It requires the data to be normally distributed.
• It is sensitive to the presence of ties in the data.

The formula for calculating Kendall Tau involves:

• The difference between ranks.
• The sum of squared differences.
• The sum of squared ranks.
• None of the options

hen interpreting Kendall Tau or Spearman Rho, a value close to -1 indicates:

• A strong negative association.
• A weak negative association.
• No association.
• A strong positive association.

Which of the following is an assumption for using Kendall Tau or Spearman Rho?

• The variables have a normal distribution.
• The variables are measured on an interval scale.
• The variables have equal variances.
• The observations are independent.

Which correlation coefficient is generally recommended for assessing the association between 1 continuous and 1 dichotomic variables?

• Pearson's correlation coefficient.
• Kendall Tau.
• Spearman Rho.
• Point-Biserial correlation.