Array Of Grades - Tally How Many As And Bs

Apr 23, 2015

I've been asked to write a program that uses an array of grades, and to tally how many A's, B's etc ... The tallies are coming up incorrectly ... I'm putting the instructions at the end of this post to show what I should be getting.

import javax.swing.JOptionPane;

public class GradeCalculation {
public static void main(String[] args) {
//define array, grade values, and tally the amount of each grade
int grade[] = { 90, 100, 80, 85, 63, 73, 80, 92, 90};
int sum = 0;
int gradeA = 0;
int gradeB = 0;

[Code] ....

The assignment: Add logic inside the for loop to test if the number is between 90 and 100. If it is in this range, then add 1 to the tally of a gradeA. You should have another test to see if the number is between 80 and 89 and if it is it should add 1 to the tally of gradeB. You should continue to have tests for 70 to79 being gradeC; 60-69 being graded; and below 60 as being gradeF. After the for loop is done, you should display a list of how many students had A's, B's, etc. in the output message box.

Then the message box should display something like this:

The sum is 753
The average is 83
The largest test score is 100
The lowest test score is 63
The number of students with scores of 90-100 (A) is 4
The number of students with scores of 80-89 (B ) is 3
The number of students with scores of 70-79 (C ) is 1
The number of students with scores of 60-69 (D) is 1
The number of students with scores below 60 (F) is 0

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Averaging Grades Program Not Adding Grades

Aug 18, 2014

Write a Swing program that declares an empty array of grades with a maximum length of 50. Implement a JOptionPane input box within a while loop to allow the user to enter grades. When the user enters the sentinel value of -1, that will signal the end of the data input loop.

After the grades are entered, a content pane should display the grades sorted from lowest to highest. Write a loop that goes through the array looking for elements that are greater than zero (0). Keep a running count of those items, and also accumulate them into a grand total. Divide the grand total by the number of grades entered to find an average, and display the average at the end of the sorted list of grades. Use the DecimalFormat method to display the average to 2 decimal places.

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Saving Student Grades In Int Array - Pass Rate 50

Apr 8, 2014

prompts user for the grades of each of the students and saves them an int array called grades. Your program shall check that the grade is between 0 and 100. program should then check if the grade is equal to or greater than 50, where 50 is the pass rate.

A sample output :

Enter the number of students: 3
Enter the grade for student 1: 55
Enter the grade for student 2: 108

Invalid grade, try again...

Enter the grade for student 2: 56
Enter the grade for student 3: 57

The average is 56.0
The maximum is 57
The minimum grade is 55
The number of fails is 0
The number of passes is 3
..

I am quiet stuck on this one.

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Apr 30, 2015

package question.pkg3;
import java.util.Scanner;
public class Question3 {
public static void main(String[] args) {
// TODO code application logic here
Scanner Luka=new Scanner(System.in);
double sum=0;double count=0;
int[] a=new int[10];

[code]....

I'm required to write a program that allows the user to enter up to 10 integer grades into an array. Stop the loop by typing in ‐1. Your main method should call an Average method that returns the average of the grades.I There's something wrong with my program , the count always stays 0 and the sum is always 1 less than the actual sum.Sample input and output :

Enter grade 1: 8
Enter grade 2: 9
Enter grade 3: 10
Enter grade 4: 5
Enter grade 5: 8
Enter grade 6: 9
Enter grade 7: -1
output

Average grade is 8.1666666667On line 13 I had count=count+1 ;

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Apr 15, 2015

In this project each individual will create a data analysis program that will at a minimum,

1) read data in from a text file,
2) sort data in some way,
3) search the data in some way,
4) perform at least three mathematical manipulations of the data,
5) display results of the data analysis in numeric/textual form, and
6) display graphs of the data. In addition,
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(Note: this is to give you practice learning new material on your own - a critical skill of today's programmer.) If you do not have a specific plan in mind for your project, below is a specific project that meets all of the qualifications as long as 7) and 8) are addressed in the implementation.

Everything is done except I need to call my methods in my GradeTester.

GradeBook:

/**
*This class creates an array called scores.
*This class determines the length of the array scores and determines the last grade in the array scores.
*This class sorts the array using a bubble sort, and searches the array.
*This class calculates the mean, standard deviation, and the median of the grades in the array scores.
*Once the grades in the array is sorted, the class then calculates the highest and lowest grades in the array.
*/

public class GradeBook {
public final int MAXARRAY_SZ = 20;
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int lastGrade = 0;
double mean = 0;

[Code] ....

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Sep 14, 2014

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import java.util.Scanner;
public class Random
{
public static void main(String [ ] args) {
Scanner input = new Scanner(System.in);
double a, b, c;

[Code] .....

This is the output that i'm getting.

Enter three scores: 87
42
94

The average is: 74.33333333333333
The lowest score was: 42.0
The average without the lowest score is: 90.5
The grade is: A

This is the way the output should look like.

Enter three scores: 87 42 94

The average is: 74.33333333333333
The lowest score was: 42
The average without the lowest score is: 90.5
The grade is: A

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Sep 29, 2014

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[code]....

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[Code] .....

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<DOCTYPE! html>
<html>
<head>
<title> Assignment 9: Javascript 3
</title>
<!-- Assignment 9, Due November 8, 2014, Jamie Zajac, TA Kartik-->
<style>
body
{
background-color: lemonchiffon;
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[Code] ....

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[Code] ....

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[Code] .....

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Averaging grades
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[Code] ....

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//stephanie
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[code]....

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