Contents
What is a continuous correlation?
The correlation coefficient is a measure of the degree of linear association between two continuous variables, i.e. when plotted together, how close to a straight line is the scatter of points. Both x and y must be continuous random variables (and Normally distributed if the hypothesis test is to be valid).
What is chi square correlation?
Pearson’s correlation coefficient (r) is used to demonstrate whether two variables are correlated or related to each other. The chi-square statistic is used to show whether or not there is a relationship between two categorical variables.
How to calculate correlation between binary and continuous variables?
The concept is to treat the ordinal or dichotomous variable as being a discrete observed counterpart to a continuous, normally distributed latent variable, and to estimate the Pearson correlation between that latent variable and the continuous variable.
What is the definition of a point biserial correlation?
The Point-Biserial Correlation Coefficient is a correlation measure of the strength of association between a continuous-level variable (ratio or interval data) and a binary variable. Binary variables are variables of nominal scale with only two values.
How to correlate dichotomous variable to continuous variable?
When used to correlate a dichotomous variable and a continuous variable, it is actually equivalent to doing a t-test on that continuous variable over the dichotomous one. (The t-statistic and p-value will come out the same).
Which is measure of association between two binary variables?
It is a measure of association between two binary variables. The formula and the details are better explained here Correlation between one continuous and one binary You might want to check @kjetil b halvorsen’s answer here, about the fallacies of using Spearman coefficient and also discusses a nice alternative approach.