Answer:
Median: 88.5
Mean: 69.75
Step-by-step explanation:
Mean: add all numbers and divide by the amount of numbers.
Median: find the center most number. If none exist, take the two center most numbers and divide them by 2.
Mean: 12+88+89+90
279/4
69.75
Median:
(88+89)/2
177/2
88.5
Answer:
Mean: 69.75
Median: 88.5
Step-by-step explanation:
To find the mean of these four numbers add them together and divide by the # of numbers there are. (4)
(12 + 88 + 89 + 90)/4
(100 + 89 + 90)/4
(100 + 179)/4
279/4
The mean of this set is 69.75.
To find the median of a set with an even amount of numbers, find the two numbers in the middle, add them, and divide by 2.
(88 + 89)/2
177/2
The median of this set is 88.5.
