CS506 Web Design and Development assignment no 1 spring fall 25 october 2011

[Vuhelper]

Question:
Write a program that computes the average and standard deviation of the text floating point numbers in a file. Use the following formulas for the average and the standard deviation of N values. The formulas compute the sum, the sum of squares, the average, the average square, the variance, and finally, the standard deviation.
[FONT=&quot]sum = x1 + x2 + x3 + ... + xN-1 + xN [/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]sumSQ = x12 + x22 + x32 + ... + xN-12 + xN2 [/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]avg = sum/N[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]avgSQ = sumSQ/N[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]var = avgSQ - avg2[/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]sd = var(1/2)[/FONT]
The input file will contain any number text floating point numbers, similar to the following:
[FONT=&quot]10.5[/FONT]
[FONT=&quot]12.9[/FONT]
[FONT=&quot]9.67[/FONT]
[FONT=&quot]12.05[/FONT]
[FONT=&quot]8.23[/FONT]
[FONT=&quot]10.08[/FONT]
[FONT=&quot]10.23[/FONT]
[FONT=&quot]7.7[/FONT]
[FONT=&quot]10.4[/FONT]
[FONT=&quot]11.34[/FONT]
Numbers could be several, or none per line, and negative numbers are perfectly OK. [FONT=&quot][/FONT]
[FONT=&quot] [/FONT]
[FONT=&quot]Note: [/FONT][FONT=&quot]All the source code should be written manually. Your code must justify enough for 15 marks[/FONT]