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Partial eta-squared is a measure of variance, like r-squared. It tells us what proportion of the variance in the dependent variable is attributable to the factor in question. You can get these measures by choosing the 'Estimates of effect size' option when setting up an ANOVA.
The beta that is calculated on Yahoo! compares the activity of the stock over the last five years and then compares it to the S&P 500. A beta of 0.00 simply means that the stock either is a new issue or doesn't yet have a beta calculated for it.eta measures a stock's volatility-the degree to which its price fluctuates in relation to the overall market. In other words, it gives a sense of the stock's market risk compared to the greater market. Beta is used also to compare a stock's market risk to that of other stocks.