What is weka correlation coefficient?

What is weka correlation coefficient?

In WEKA, the correlation coefficient between 1 and 0, but according to wikipedia http://en.wikipedia.org/wiki/Correlation_coefficient, it’s between -1 and 1, while the coefficient of determination, R2 http://en.wikipedia.org/wiki/R_squared is between 1 and 0.

When one regression coefficient is positive the other would be?

Also if one regression coefficient is positive the other must be positive (in this case the correlation coefficient is the positive square root of the product of the two regression coefficients) and if one regression coefficient is negative the other must be negative (in this case the correlation coefficient is the …

How to interpret Weka logistic regression output?

For instance, the odds of outlook=sunny is the probability of a sunny day in which you can play over the probability of having a sunny day in which you can’t play. Similarly, you can calculate the odds for outlook=¬sunny.

How to interpret the coefficient of a predictor variable?

Interpreting the Coefficient of a Continuous Predictor Variable For a continuous predictor variable, the regression coefficient represents the difference in the predicted value of the response variable for each one-unit change in the predictor variable, assuming all other predictor variables are held constant.

Which is the best algorithm for classification in Weka?

Logistic regression is a fast and simple technique, but can be very effective on some problems. The logistic regression only supports binary classification problems, although the Weka implementation has been adapted to support multi-class classification problems. Choose the logistic regression algorithm:

How to interpret the intercept of a regression coefficient?

Let’s take a look at how to interpret each regression coefficient. The intercept term in a regression table tells us the average expected value for the response variable when all of the predictor variables are equal to zero. In this example, the regression coefficient for the intercept is equal to 48.56.