John is paid $20 per hour, his boss is giving him a 20% raise. How much will he make per hour after the raise?
1 answer:
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Answer:
c) 81.5
Step-by-step explanation:
Listing the 25 ages in crescent order:
60 61 62 63 64 65 66 68 68 69 70 73 73 74 75 76 76 81 81 82 86 87 89 90 92
The upper or third quartile's position is given by:
This means that the third quartile is the average between the 19th and 20th numbers:
The upper quartile is 81.5.