Answer:
Mean - 84
Median - 77
Mode - 84, 96, 72, 77, 91 (Or no mode)
Range - 12
Explanation:
Mean;
Step 1 - Add all the numbers up:
84 + 96 + 72 + 77 + 91
= 420
Step 2 - divide that by 5 (because there are 5 numbers):
420 ÷ 5
= 84
Median;
Step 1 - Put the numbers in order:
84, 72, 77, 91, 96
Step 2 - Find the middle number
84, 72, 77, 91, 96
Mode;
There aren't any repeated numbers so you can put all the numbers or no mode
84, 96, 72, 77, 91
Range;
Step 1 - Subtract the smallest number from the biggest number:
96 - 84
= 12
You're welcome :)