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Mean and standard deviation.
Write a program that reads a set of floating-point data values from the input. When the user indicates the end of input, print out the count of the values, the average, and the standard deviation. The average of a data set x1, . . . , xn is a = (Σxi)/n where Σxi = x1 + . . . + xn is the sum of the input values. The standard deviation is s = √(Σ(xi - a)2 / (n - 1)) However, that formula is not suitable for our task. By the time you have computed the mean, the individual xi are long gone. Until you know how to save these values, use the numerically less stable formula s = √(((Σxi2) - (Σxi) / n)/(n - 1)) You can compute this quantity by keeping track of the count, the sum, and the sum of squares in the DataSet class as you process the input values.
public float usefulLoad() // this is the grossWeight - emptyWeight public float usefulLoadWithFuel( in gallons ) // this is the useful load - gallons x 6. The programmer user will pass in the number of gallons on board.
Create an empty text file called myfile.txt. Write a Java program that writes your names to the text file created. If the file does not exist, include an exception handler for that error.
Java program to create a tree, generate class - BottomUpTwoThreeFourTree, BottomUpTwoThreeFourTree,
Write a class that has three overloaded static methods for calculating the areas of the following geometric shapes
Write a program and include the following methods. The program reads in names and ages (use 2 parallel arrays, maximum size 50) from a file called Stuff.dat.
1) Write a while loop that lets the user enter a number. The number should then be multiplied by 10, and stored in a variable called product. The loop should then iterate as long as product contains a value less than 100.
Write a regular expression that selects lines containing the html BR tag. The rules for this tag are that, like all html tags, it starts with . In between are the letters b and r in that order
Write a Java application that reads a file containing text. Your program should read each line and display it on the console screen preceded by line numbers.
Write a program to solve RSA, Use either Java or "VERY DETAILED" pseudocode. Take input for p, q, e, the number to encrypt and the number to decrypt.
Write a Java windowed application to do online quiz on general knowledge and the application also displays the quiz result.
Implement the same using a signaling mechanism that signals to all waiting dequeuers and do a performance comparison using timing analysis. Which works faster?
(Algebra: 2 X 2 linear equations) Design a class named LinearEquation for a 2 X 2 system of linear equations.
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