C++; arrays and standard devation/variance?

Comp Sci
Thread starter mathman44
Start date Feb 15, 2010
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Arrays Standard

In summary, C++ is a high-level programming language used for developing a wide range of applications such as system software, video games, and device drivers. An array in C++ is a data structure that can store a fixed-size collection of elements of the same data type. To declare an array in C++, you need to specify the data type, name, and size of the array. Standard deviation and variance are measures of the spread or variability of a set of data, which can be calculated using the <code>stddev</code> and <code>variance</code> functions from the <code><cmath></code> library or custom functions.

Feb 15, 2010

mathman44

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Found solution. Nvm.

Last edited: Feb 15, 2010

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Feb 15, 2010

mgb_phys

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what does it print?
What did you expect it to print?

Feb 15, 2010

mathman44

The code works fine as is; it prints the mean, # of data, min and max of the array input. I just don't know how to make it also "cout" the std devation and variance of the input.

Related to C++; arrays and standard devation/variance?

1. What is C++?

C++ is a high-level programming language used for developing a wide range of applications such as system software, video games, and device drivers. It was developed by Bjarne Stroustrup in 1983 as an extension of the C programming language.

2. What is an array in C++?

An array in C++ is a data structure that can store a fixed-size collection of elements of the same data type. It allows for efficient storage and retrieval of data and is commonly used for tasks such as sorting and searching.

3. How do you declare an array in C++?

To declare an array in C++, you need to specify the data type of the elements, the name of the array, and the size of the array in square brackets. For example, to declare an array named "numbers" that can hold 5 integers, you would write: "int numbers[5];"

4. What is standard deviation and variance in C++?

Standard deviation and variance are measures of the spread or variability of a set of data. In C++, they can be calculated using the stddev and variance functions from the <cmath> library. Standard deviation is the square root of the variance and represents the average amount that each data point differs from the mean of the data set.

5. How do you calculate standard deviation and variance in C++?

In C++, you can use the stddev and variance functions from the <cmath> library to calculate standard deviation and variance. These functions take in a set of data as input and return the respective values. Alternatively, you can also write your own functions to calculate these measures using mathematical formulas.