Hippos are very aggressive creatures and are very dangerous. They have large teeth and tusks that they use for fighting off others that they see as threats, including humans. Sometimes, their young are the victims of their temper.During a fight between two adults, a young hippo can be hurt or crushed. Though hippos move quite quickly through the water, they can't swim.hey have large teeth and tusks that they use for fighting off others that they see as threats, including humans. Sometimes, their young are the victims of their temper. During a fight between two adults, a young hippo can be hurt or crushed. Though hippos move quite quickly through the water, they can't swim.
Further information on the Pearson Product-Moment Correlation Coefficient is provided on Wikipedia. Pearson Product-Moment Correlation Coefficient. The Pearson product-moment correlation coefficient is a statistical measurement of the correlation (linear association) between two sets of values. The Pearson product-moment correlation coefficient for two sets of values, x and y, is given by the formula: where x and y are the sample means of the two arrays of values.
In case of a single regressor, fitted by least squares, R 2 is the square of the Pearson product-moment correlation coefficient relating the regressor and the response variable. More generally, R 2 is the square of the correlation between the constructed predictor and the response variable.n this form R 2 is expressed as the ratio of the explained variance (variance of the model's predictions, which is SS reg / n) to the total variance (sample variance of the dependent variable, which is SS tot / n).