The correlation coefficient describes:a.Magnitudeb.Directionc.Both magnitude and directiond.None of theseClear my choice

A correlation coefficient consists of two things: ____________ and __________Question 7Answera.Direction and strengthb.Sign, absolute valuec.Absolute value, strengthd.Sign and direction

The correlation for the values of two variables moving in the opposite direction isa.Positiveb.Negativec.Non-lineard.LinearClear my choice

Which of the following are measured by correlation coefficienta.Linear association between two random variablesb.Direction of relationship between two variables (positive or negative association)c.A unit free value for the strength of linear relationship between two random variablesd.All of the above

A researcher is interested in assessing the strength and direction of the relationship between two variables that are not normally distributed. Which correlation coefficient should be used?  A. Pearson's correlation coefficient  B. Spearman’s rank correlation coefficient  C. Kendall's tau-b  D. Point-biserial correlation coefficient

Recall from Week 2: Correlation Coefficient, r The Correlation coefficient, r, is a measure of the strength and direction of a linear relationship between 2 variables X and Y Ranges between –1 and 1 • The closer to –1, the stronger the negative linear relationship • The closer to 1, the stronger the positive linear relationship • The closer to 0, the weaker the linear relationship (Also called Standardised Covariance i.e. invariant to units of measure)