In Spreadsheet Analysis, Excel is a very useful tool. It has several functions for aggregate data analysis. COUNTIF, SUM, AVERAGE are some common formulas used.

Explain the use and implementation of COUNTIF function in Microsoft Excel.

Java

Here is a public class called Student Public class Student { public int studID = 0; public char studGrade = 'F';} Use Notepad to write a test class called testStud.java which will instantiate an object called myStudent. Use the object to write print statments to print the current values of the two attributes. Next, use the object to change the studID to 127 and the studGrade to an A. Write code that will display the two attributes studID and studGrade.

Information and coding theory question.

When S is a source, let S^n denote the n-th extenstion of S. Is it true that S^4n = (S^2n)^2 ? I belive that it is true but i need a good complete explaniation .

Java - Compiler errors

In Code3 there are (6) numbered items. Do only the first four "compiler errors." Explain why each will produce a compiler error and what you would do to fix the problem. 1. What the JVM will do when you remove the comments. 2. What caused the problem in the first place. 3. What can be done (all the solutions) to fixing the problem. ------------------------------------------------------- 4. What is the difference between "typecasting" and "promotion."

Creating a Java Program

See Attach Files. Use the modular approach and build the program piece by piece. Use stubs and test each part of the program before combining the error free segments of code at the end. The modular approach really does work!! Write a Java program that does the following: 1. Creates a Ball class with attributes for color, hardness, and size and instantiates the following Ball objects: golf, baseball, soccer. 2. Creates a display method which can print the current state of the attributes for all objects. 3. Creates attributes that have default values (your choice) which will display to the screen when the program is run and then each of the attributes for each object will be changed (... click for more