The mean of the data set is 81.6.
The median of the data set is 80.
<h3>What is mean?</h3>
The mean is the average of a data set. Therefore,
Mean = (70 x 2 + 75 x 8 + 80 x 6 + 85 x 3 + 90 x 9) / 28 = 81.6.
Hence,
mean = 81.6
<h3>What is a median?</h3>
Median is a statistical measure that determines the middle value of a dataset listed in ascending order .
Therefore,
28 / 2 = 14
median = 80 + 80 / 2 = 160 / 2 = 80
learn more on mean and median here: brainly.com/question/28052298
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Answer:
28 cm^2
Step-by-step explanation:
a= ( b1+ b2 / 2 ) h
a= ( 5+9 /2)*4
5+ 9 = 14
14/2=7
7*4 =28
1/2 and 4/8! Both are equivalent!
Answer:
8 dollars
Step-by-step explanation:
20/100 = x/10
100x=20
x=2
You save two dollars
10-2 = 8
$8
