Its based on a scientifically validated developmental scale that measures both the math skill level of your students and the difficulty of math skills and concepts they encounter. Mathjs is an extensive math library for JavaScript and Nodejs. What to do with a Quantile measure.
Public static final class QuantilesScaleAndIndex extends Object.
You need to enable JavaScript to run this app. Use the quantile function to return all values within the q quantile or percentile of input data. Define x k N - 1 q. Returns the natural logarithm of the probability density function PDF of this distribution evaluated at the specified point xIn general the PDF is the derivative of the CDFIf the derivative does not exist at x then an appropriate replacement should be returned eg.