make up your own small dataset are the number of six packs of each brand of beer each customer purchase and calculate the average for your data that correspond to those in figure 2.44

try this:

go tos official website.

click on your profile pic at the top right of the screen and click 'edit profile'.

click on "preferences" and press "year of birth".

and then just maybe try to reset whatever error made before by typing in the correct age details again. hope this !