Absolute Java (6th Edition)
Absolute Java (6th Edition)
6th Edition
ISBN: 9780134041674
Author: Walter Savitch, Kenrick Mock
Publisher: PEARSON
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Chapter 3, Problem 15PP

This problem is based on a "Nifty Assignment" by Steve Wolfman (http://nifty. stanford.edu/2006/wolfman-pretid). Consider lists of numbers from real-life data sources-for example, a list containing the number of students enrolled in different course sections, the number of comments posted for different Facebook status up dates, the number of books in different library holdings, the number of votes per precinct, etc. It might seem like the leading digit of each number in the list could be 1-9 with an equally likely probability. However, Benford's Law states that the leading digit is 1 about 30% of the time and drops with larger digits. The leading digit is 9 only about 5% of the time.

Write a program that tests Benford's Law. Collect a list of at least 100 numbers from some real-life data source and enter them into a text file. Your program should loop through the list of numbers and count how many times 1 is the first digit, 2 is the first digit, etc. For each digit, output the percentage it appears as the first digit.

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Chapter 3 Solutions

Absolute Java (6th Edition)

Ch. 3 - Prob. 11STECh. 3 - Prob. 12STECh. 3 - Prob. 13STECh. 3 - Suppose are two variables that have been given...Ch. 3 - Prob. 15STECh. 3 - Assume that nextword is a String variable that has...Ch. 3 - Write an if-else statement that outputs the word...Ch. 3 - Write an if-else statement that outputs the word...Ch. 3 - Determine the value, true or false, of each of the...Ch. 3 - Does the following sequence produce a division by...Ch. 3 - Prob. 21STECh. 3 - Prob. 22STECh. 3 - What output would be produced in Self-Test...Ch. 3 - What is the output produced by the following? Ch. 3 - What output would be produced in Self-Test...Ch. 3 - Prob. 26STECh. 3 - What is the most important difference between a...Ch. 3 - Prob. 28STECh. 3 - Prob. 29STECh. 3 - What is the output of the following? Ch. 3 - Rewrite the following for statement as a while...Ch. 3 - What is the output of the following loop? Identify...Ch. 3 - What is the output of the following loop? Comment...Ch. 3 - Prob. 34STECh. 3 - For each of the following situations, tell which...Ch. 3 - What is the output of the following? Ch. 3 - What is the output of the following? Ch. 3 - What is the output produced by the following?...Ch. 3 - What is the output produced by the following?...Ch. 3 - Fix the bug in the code in the earlier subsection...Ch. 3 - Add some suitable output statements to the...Ch. 3 - What is the bug in the following code? What do you...Ch. 3 - Prob. 43STECh. 3 - What numbers could be generated by...Ch. 3 - What numbers could be generated by...Ch. 3 - Use the method Math. random to generate a random...Ch. 3 - (This is a version of Programming Project 2.1 from...Ch. 3 - A designer is trying to create a new pattern of...Ch. 3 - Weight is defined as the gravitational force...Ch. 3 - It is difficult to make a budget that spans...Ch. 3 - You have just purchased a stereo system that cost ...Ch. 3 - The Fibonacci numbers Fn are defined as follows:...Ch. 3 - An Armstrong number is an n-digit number that...Ch. 3 - In a certain code language, numerals are each...Ch. 3 - Write a program that calculates the total grade...Ch. 3 - The game of Pig is a simple two-player dice game...Ch. 3 - You have three identical prizes to give away and a...Ch. 3 - Redo or do for the first time Programming Project...Ch. 3 - The file words. txt on the hook's website contains...Ch. 3 - The file words. txt on the book's website contains...Ch. 3 - This problem is based on a "Nifty Assignment" by...Ch. 3 - Prob. 16PP

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