How would you create a variable in PowerShell and assign a value to it? Provide an example.

In PowerShell, creating a variable and assigning a value to it is a fundamental concept that allows you to store and manipulate data. The process is straightforward and follows a specific syntax.

To create a variable in PowerShell, you use the dollar sign ($) followed by the variable name. The variable name can include letters, numbers, and underscores, but it must start with a letter or underscore. PowerShell is case-insensitive, meaning "Variable" and "variable" would refer to the same variable.

To assign a value to a variable, you use the assignment operator (=), which indicates that the value on the right side should be assigned to the variable on the left side. The value can be a string, number, array, or any other valid data type in PowerShell.

Here's an example of creating a variable named "myVariable" and assigning the value "Hello, World!" to it:

```
powershell`$myVariable = "Hello, World!"`
```
In this example, the variable "$myVariable" is created, and the string "Hello, World!" is assigned as its value.

You can also assign values to variables based on command output or expressions. For instance, consider the following example:

```
powershell`$number1 = 10
$number2 = 5
$result = $number1 + $number2`
```
In this example, two variables, "$number1" and "$number2," are created and assigned the values 10 and 5, respectively. The variable "$result" is then assigned the value of the sum of "$number1" and "$number2," which is 15.

It's important to note that PowerShell is dynamically typed, meaning variables can hold different types of data at different times. The data type of a variable is determined by the value assigned to it.

Creating and assigning values to variables in PowerShell is a fundamental concept that allows you to store and manipulate data throughout your scripts. Variables provide flexibility and control over data, enabling you to perform various operations and automate tasks effectively.