method to compute the mean (average) of the data in an array takes one parameter, an array of integers returns the mean (average) of the data in the parameter array
method to compute the mean (average) of the data in an array takes one parameter, an array of integers returns the mean (average) of the data in the parameter array
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
Related questions
Question
Image one is my file.
image 2 is the program I wrote
base on my program I want to write a method 3:
A method to compute the mean (average) of the data in an array
-
-
takes one parameter, an array of integers
-
returns the mean (average) of the data in the parameter array
-
![1 import java.util.*;
2 import java.io.*;
3 public class FunWithHistograms {
4
5
6
7
8
public static void main(String[] args) throws FileNotFoundException {
printIntro();//method 1
Scanner console = new Scanner (System.in);
System.out.print("input file name? ");
String fileName = console.nextLine();
Scanner inFile = new Scanner (new File(fileName));
int[] data = readData(inFile);//method 2
9
10
11
12
13 }
14
15
16
17
18
19
20
21
22 public static int[] readData(Scanner inFile) { //method 2
23
int numVals = inFile.nextInt ();
24
int[] data = new int[numVals];
25
26
27
28
29
30
31
32
33
34 }
public static void printIntro() {
System.out.println("The program will analyze data from a dataset of");
System.out.println("non-negative
integer values. It will produce a");
System.out.println("histogram of the data and output some statistics.");
System.out.println();
for (int i = 0; i < numVals; i++) {
data[i] = inFile.nextInt ();
}
return data;
//write method 3 plz.
/home/FunWithHistograms.java 32:26 Spaces: 4 (Auto)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F6c680976-d041-43f6-b2b7-59630778639d%2F7dac6557-963e-43df-8964-7ea710d402be%2F72v7dzm_processed.png&w=3840&q=75)
Transcribed Image Text:1 import java.util.*;
2 import java.io.*;
3 public class FunWithHistograms {
4
5
6
7
8
public static void main(String[] args) throws FileNotFoundException {
printIntro();//method 1
Scanner console = new Scanner (System.in);
System.out.print("input file name? ");
String fileName = console.nextLine();
Scanner inFile = new Scanner (new File(fileName));
int[] data = readData(inFile);//method 2
9
10
11
12
13 }
14
15
16
17
18
19
20
21
22 public static int[] readData(Scanner inFile) { //method 2
23
int numVals = inFile.nextInt ();
24
int[] data = new int[numVals];
25
26
27
28
29
30
31
32
33
34 }
public static void printIntro() {
System.out.println("The program will analyze data from a dataset of");
System.out.println("non-negative
integer values. It will produce a");
System.out.println("histogram of the data and output some statistics.");
System.out.println();
for (int i = 0; i < numVals; i++) {
data[i] = inFile.nextInt ();
}
return data;
//write method 3 plz.
/home/FunWithHistograms.java 32:26 Spaces: 4 (Auto)
Transcribed Image Text:world_cup_goals_20...
seattle_average_te...
1 29//totol value in this file.
25
35
45
55
65
7 3
85
95
10 5
11 3
12 5
13 5
14 5
15 4
16 5
17 2
18 5
19 5
20 5
21 5
22 4
23 5
24 5
25 5
26 5
27 5
28 4
29 5
30 5
pril 2019.txt 1:1 Spaces: 4 (Auto)
disneyland_rati... X
FunWith Histograms...
All changes saved
Run
✓ Mark
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Follow-up Questions
Read through expert solutions to related follow-up questions below.
Follow-up Question
Thank you, but in this case, what number should "n" be?
Solution
by Bartleby ExpertKnowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Recommended textbooks for you
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education