Get fund performance data on John Hancock Variable Insurance Trust Science & Technology Trust Series I (JESTX) including growth, trailing returns, and quarterly and monthly returns. Welcome!
Coefficient of variation is a measure of the ratio of the standard deviation to the mean. In statistics it is abbreviated as CV. To calculate CV you take the standard deviation of the data and divide it by the mean of the data. Mean is another word for average. To calculate the average of a set of data, you add all the numbers and then divide by how many numbers you added.
The coefficient of determination R 2 is a measure of the global fit of the model. Specifically, R 2 is an element of [0, 1] and represents the proportion of variability in Y i that may be attributed to some linear combination of the regressors (explanatory variables) in X.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).