If you need to generate one or more random numbers for business, education, or another purpose, you can do so right in Microsoft Excel. You can get random numbers using either a random number generator tool or an Excel function.
With an add-in from Microsoft called Analysis ToolPak, you can perform many statistical and engineering operations such as finding a moving average. Another feature of the tool is a random number generator.
To see if you already have the add-in, go to the Data tab and the Analysis section of the ribbon. Look for the Data Analysis button. If you have the button, you can skip down to using the tool.
If you don’t see the button, you can add it easily. Go to File > Options and select “Add-ins” on the left. At the bottom of the window, go to Manage and pick “Excel Add-ins.” Click “Go.”
When the Add-ins window opens, check the box next to Analysis ToolPak and click “OK.”
Head to the Data tab and click “Data Analysis” in the Analysis section of the ribbon. When the window appears, select “Random Number Generation” and click “OK.”
Starting at the top of the window, enter the number of columns you want to fill using the Number of Variables box. Then, enter the number of rows in the Number of Random Numbers box.
This generator is advanced in that you can select the distribution you want to use from options like Bernoulli, Binomial, Patterned, and Discrete. Once you select the Distribution from the drop-down list, the Parameters section will update with the necessary information for you to complete.
In the Random Seed field, you can enter a starting number (up to 9999) for the generator to use if you like. Then, choose one of the Output Options for where you want your random numbers to display.
Click “OK” when you’re ready and you’ll receive your numbers.
Another option for generating random numbers in Excel is using a function. There are three functions you can use. Each time you recalculate or reopen the workbook, a new random number will be generated with these functions. They don’t offer as many options as the Random Number Generator tool, but they’re simpler to use.
RAND function, you can generate a random number greater than or equal to zero and less than one. This provides you with decimal number options. But you can also get numbers going higher than one by tweaking the formula.
For a basic random number, enter the following and press Enter:
For a random number greater than or equal to zero and less than 500, enter the following and hit Enter:
For a random whole number greater than or equal to zero and less than 500, enter the following and press Enter:
Maybe you want to generate a number that’s between two specific numbers. In this case, you’d use the
For a random number between 10 and 100, enter the following and press Enter:
For a random number between negative 10 and 10, enter the following and hit Enter:
For Microsoft 365 subscribers, the
RANDARRAY function provides a set of random numbers. You can choose the number of rows and columns to fill with numbers. You can also select minimum and maximum values and specify whole numbers or decimals.
The syntax for this function is
RANDARRAY(rows, columns, minimum, maximum, whole-decimal) where you enter
True for a whole number or
False for a decimal number as the last argument. All arguments are optional.
For a random array of numbers that cover three rows and four columns, you’d enter the following and hit Enter:
For a random array that covers the same number of rows and columns but also has a minimum of 1 and a maximum of 10, enter the following and press Enter:
For a random array using these same arguments but returns only whole numbers, you would enter the following and press Enter:
Microsoft Excel gives you easy options for generating random numbers. Whether you need a discrete number or simply a number between one and 10, Excel has you covered.
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