Please help

median : 73

mean : 71.5

mode : 68 and 85 (?)

range: 35

Step-by-step explanation:

50, 50, 68, 68, 68, 78, 78, 85, 85, 85

median:  order numbers least to greatest. add the two middle numbers, 68 and 78. divide by 2. 68 + 78 = 142 ,, 142 ÷ 2 = 73

mean: add all the numbers, then divide by the amount of numbers. 50 + 50 + 68 + 68 + 68 + 78 + 78 + 85 + 85 + 85 = 715. 715 ÷ 10 = 71.5

mode: the number that occurs the most,,theres two whoops 68 and 85

range: subtract the smallest number from the largest. 85 - 50 = 35

step-by-step explanation:

(s)he  is right it would be 5.5% because it is smaller than 15.5% or anything smaller than 15.5% in general