ACT and MCA practice website:

    To access MegaStat Excel Add-in file go to this website:
    Click on the right most book (Elementary Statistics - A Brief Verison)
    On the left hand tabs, click on Student Edition.  On the next screen, click on MegaStat.
    Download MegaStatExcel.zip.  Once it is downloaded, open the file that says MegaStat.xla (should be the top one in the folder).