The language is Java.

//Please explain the process and variables and why they were used. I will upvote. I really want to understand.

Implement a 3-dimensional array to store grades.

Each row will represent the grades of each of 4 (4, not 3, not 5) students and there will be 3 grades for each student (one for IST 110, 210, and 220 each), one for each of 2 tests;

Each class grade is wholly determined by the two tests weighted equally (hence a 4x3x2 array of doubles).

Write a driver that initializes the array.

Then determine (to 2 digits after the decimal point):

1) each students class average in each class (where each test is ranked equally)

2) each tests average,

3) the class average for each class

4) each students ETM average (ranking 110 at .25, and each of 210 and 220 at .375),

5) the average ETM grade for all students.

Do NOT prompt the user for this data; initialize the array in the main routine. Only one .java file is to be submitted. If you use the grades shown here, then the answers you should get are also shown here:

Data S1 S2 S3 S4 110 (-25) T1 T2 90 85 75 82 86 92 83 90 210 (375) T1 T2 74 86 88 91 84 82 92 88 220 (375) T1 T2 96 86 88 87 92 94 74 91 Test Average 83.50 87.25 84.50 86.75 89.25 87.75 Student Avgs S1 S2 S3 S4 110 87.50 78.50 89.00 86.50 210 80.00 89.50 83.00 90.00 220 ETM Average 94.00 87.13 90.00 86.94 81.00 83.75 89.00 88.75 Class Average 85.38 85.63 88.50 86.64