In test 1 sheet, there are the data of members who are in group A and C. Data are sorted by column F in alphabetically, and then by column A in number in ascending. Please answer these questions:
1. What is the highest value in column J and who got it? Please show your formula to find the highest value in column J.
2. What is the minimum value in column L and who got it? Please show your formula to find the minimum value in column L.
3. What is the mean value in column P and how many members got score less than the mean value? Please show your formula to find the mean value in column P and to count the members that got score less than the mean value.