The average score of 1:A is (65+94+95+98+98)/5 = 90; The median is 95.

Average b score (62+71+98+99+100)/5 = 86 Median: 98.

2. Comparatively speaking, the score of A is higher than that of B, and the score of A is more stable than that of B..

3: C Average score (80+86+90+95+99)/5=90 Median: 90.

Variance: (100+16+0+25+81)/5 = 44.4.

Party A's balance: (625+16+25+9+9)/5 =136.8.

So the score of c is more stable than that of a.

I am glad to answer for the landlord. I hope the answer can be adopted by the landlord. Thank you.