In various applications, you are often asked to compute the mean and standard deviation of data. The mean is simply the average of the numbers. The standard deviation is a statistic that tells you how tightly all the various data are clustered around the mean in a set of data. For example, what is the average age of the students in a class? How close are the ages? If all the students are the same age, the deviation is 0. Write a program that prompts the user to enter any number of values into a double array, and then calculates and displays the mean and standard deviations of these numbers using the following formulas: (2,-mean) 23 +23+ *** +z, deviation= mean= n-1 Required Methods You must write your program so that the following methods are defined/implemented and used (called): • /* Compute the deviation of double values */ public static double deviation(double[] x) • /* Compute the mean of an array of double values */ public static double mean (double[] x) Sample Run (user input in color): Enter numbers ('quit' to end): 1.9 2.5 3.7 1 3 4 2 quit The mean is 3.11 The standard deviation is 1.55738

In various applications, you are often asked to compute the mean and standard deviation of data. The mean is simply the average of the numbers. The standard deviation is a statistic that tells you how tightly all the various data are clustered around the mean in a set of data. For example, what is the average age of the students in a class? How close are the ages? If all the students are the same age, the deviation is 0. Write a program that prompts the user to enter any number of values into a double array, and then calculates and displays the mean and standard deviations of these numbers using the following formulas: (2,-mean) 23 +23+ *** +z, deviation= mean= n-1 Required Methods You must write your program so that the following methods are defined/implemented and used (called): • /* Compute the deviation of double values / public static double deviation(double[] x) • / Compute the mean of an array of double values */ public static double mean (double[] x) Sample Run (user input in color): Enter numbers ('quit' to end): 1.9 2.5 3.7 1 3 4 2 quit The mean is 3.11 The standard deviation is 1.55738

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

Problem 1PE

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Concept explainers

Intelligent Machines

Machines that use artificial intelligence to learn from the environment and past experiences to perform better in the presence of variability and uncertainty are called intelligent machines. Intelligence develops according to environment and experience. It is human-like behavior. When the computer system or any programmed machine learns from the inputs and corresponding outputs, it can be called an intelligent machine.

Question

In various applications, you are often asked
to compute the mean and standard
deviation of data. The mean is simply the
average of the numbers. The standard
deviation is a statistic that tells you how
tightly all the various data are clustered
around the mean in a set of data. For
example, what is the average age of the
students in a class? How close are the ages?
If all the students are the same age, the
deviation is 0.
Write a program that prompts the user to
enter any number of values into a double
array, and then calculates and displays the
mean and standard deviations of these
numbers using the following formulas:
(z - mean)
z+z3+ *** +zn deviation =
mean =
n-1
Required Methods
You must write your program so that the
following methods are defined/implemented
and used (called):
• /* Compute the deviation of
double values */
public static double
deviation (double[] x)
• /* Compute the mean of an array
of double values */
public static double
mean (double[] x)
Sample Run (user input in color):
Enter numbers ('quit' to end) :
1.9
2.5
3.7
2
1
6
4
quit
The mean is 3.11
The standard deviation is 1.55738

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In various applications, you are often asked to compute the mean and standard deviation of data. The mean is simply the average of the numbers. The standard deviation is a statistic that tells you how tightly all the various data are clustered around the mean in a set of data. For example, what is the average age of the students in a class? How close are the ages? If all the students are the same age, the deviation is 0. Write a program that prompts the user to enter any number of values into a double array, and then calculates and displays the mean and standard deviations of these numbers using the following formulas: mean)? 2i +x2 + .. + xn i=1 i=1 mean = deviation = п - 1
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