Answer:
The mean of Brett's scores are 74.33.
Step-by-step explanation:
The mean is the average of the numbers. It is easy to calculate: add up all the numbers, then divide by how many numbers there are. In other words it is the sum divided by the count.
- (669, in our case) SUM / COUNT of units, (this case it is 9)
MATH:
SUM = 98 + 100 + 65 + 78 + 98 + 35 + 100 +45 + 50
SUM = 669
COUNT = 98,100,65,78,98,35,100,45,50 - How many numbers are there total?
COUNT = 9
SUM
-------------------------- - SUM over COUNT
COUNT
SUM / COUNT = ?
669 / 9 = ?
= 74.33
