The Comparison Of The Number Of Sets In The Maths - 795 Words

public class StatCalc { private int count; // Number of numbers that have been entered. private double sum; // The sum of all the items that have been entered. private double squareSum; // The sum of the squares of all the items. /** * Add a number to the dataset. The statistics will be computed for all * the numbers that have been added to the dataset using this method. */ public void enter(double num) { count++; sum += num; squareSum += num*num; } /** * Return the number of items that have been entered into the dataset. */ public int getCount() { return count; } /** * Return the sum of all the numbers that have been entered. */ public double getSum() { return sum; } /** * Return the average of all the†¦show more content†¦Methods are provided to return the following statistics for the set of numbers that have been entered: The number of items, the sum of the items, the average, the standard deviation, the maximum, and the minimum. */ public class StatCalc { private int count; // Number of numbers that have been entered. private double sum; // The sum of all the items that have been entered. private double squareSum; // The sum of the squares of all the items. private double max = Double.NEGATIVE_INFINITY; // Largest item seen. private double min = Double.POSITIVE_INFINITY; // Smallest item seen. public void enter(double num) { // Add the number to the dataset. count++; sum += num; squareSum += num*num; if (num max) max = num; if (num min) min = num; } public int getCount() { // Return number of items that have been entered. return count; } public double getSum() { // Return the sum of all the items that have been entered. return sum; } public double getMean() { // Return average of all the items that have been entered. // Value is Double.NaN if count == 0. return sum / count; } public double getStandardDeviation() { // Return standard deviation of all the items that have been entered. // Value will be Double.NaN if count == 0. double mean = getMean(); return Math.sqrt( squareSum/count - mean*mean ); } public double getMin() { // Return the smallest item that has been entered. // Value will be infinity if no items haveShow MoreRelatedCollege For All : Gaps Between Desirable And Actual P 12 Math Achievement Trajectories For College Readiness835 Words   |  4 PagesEducation Research Article Classification Cara Beaty Article: College for All: Gaps Between Desirable and Actual P-12 Math Achievement Trajectories for College Readiness, by Jaekyung Lee, from Educational Researcher Volume 41, Number 2, March 2012 Classification: Question: Is the article or report empirical research? 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