So, to fix the random numbers you generated (I used the RAND function in my example below), select the cells containing those numbers, right-click the selected cells, and click "Copy ...

For example, to select 50 entries, click the second row, hold "Shift" and click row "51." Press "Ctrl-C" to copy the data, open a new Excel workbook or sheet and press "Ctrl-V" to copy the sample ...