By default, rand returns normalized values (between 0 and 1) that are drawn from a uniform distribution. To change the range of the distribution to a new range, (a, b), multiply each value by the width of the new range, (b – a) and then shift every value by a.

First, initialize the random number generator to make the results in this example repeatable.

Create a vector of 1000 random values. Use the rand function to draw the values from a uniform distribution in the open interval, (50,100).

Verify the values in r are within the specified range.

The result is in the open interval, (50,100).

Note

Some combinations of a and b make it theoretically possible for your results to include a or b. In practice, this is extremely unlikely to happen.