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One statistical operation that is sometimes performed on a set of data values is to remove values that are far from the average. Write a program that reads real values from a text file, one per line. Store the data values as Double objects in an instance of the class java.util.ArrayList. Then Use an iterator to compute the average and standard deviation of the values. Display these results. Use a second iterator to remove any value that is more than two standard deviations away from the average. Use a for-each loop to display the remaining values and compute the new average. Display the new average.

One statistical operation that is sometimes performed on a set of data values is to remove values that are far from the average. Write a program that reads real values from a text file, one per line. Store the data values as Double objects in an instance of the class java.util.ArrayList. Then Use an iterator to compute the average and standard deviation of the values. Display these results. Use a second iterator to remove any value that is more than two standard deviations away from the average. Use a for-each loop to display the remaining values and compute the new average. Display the new average.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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One statistical operation that is sometimes performed on a set of data values is to remove values that are far from the average. Write a program that reads real values from a text file, one per line. Store the data values as Double objects in an instance of the class java.util.ArrayList. Then Use an iterator to compute the average and standard deviation of the values. Display these results. Use a second iterator to remove any value that is more than two standard deviations away from the average. Use a for-each loop to display the remaining values and compute the new average. Display the new average.

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