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# Lab 4 - lab4CS101 1 Objectives Method declaration and...

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lab4–CS101 October 30, 2007 1 Objectives Method declaration and invocation Math class Loops and selection control 2 Lab description In this lab assignment, you are going to implement a set of methods, each of which is for solving a given task. The requirement of each methods is below. In the main method, you shall write code to get user input and call each of the following method. Please find some test cases for each method to test their correctness. 2.1 method1 In business applications, you are often asked to compute the mean and standard deviation of data. Please write a method that generate ten random numbers between 0 and 1000, including both 0 and 1000, and computes the mean and standard deviations of these numbers using the following formula: mean = n i =1 x i n = x 1 + x 2 + ... + x n n (1) deviation = radicaltp radicalvertex radicalvertex radicalbt n i =1 x 2 i - ( n i =1 x i ) 2 n n - 1 (2) The prototype of the method is public static void meanDeviation() 2.2 method2 In this method, you should implement the sqrt method.

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Lab 4 - lab4CS101 1 Objectives Method declaration and...

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