Of course, I'm glad to help.
Mean is average. So for example, if I had the numbers 2,3,4, and 5 the mean would be 10.25.
The steps to getting mean are adding up all your numbers then dividing by the number of equalities you have.
Median is the middle number in your group. For example, if I had numbers 2, 3, 4, 5, and 6. The median would be 4 because that the number in the middle.
But when you have an even amount of numbers (for example 2,3,4,5) you'd add up the ones in the middle (3 and 4) then divide them by 2 (3+4=7/2). In this case, the median would be 3.5.
I know how hard school has been this year so it's understandable if you need help. You can always reach out to me in messages for more help.