only looking for help with questions 8 and 9 Sample Group Da

only looking for help with questions 8 and 9

Sample Group Data Set 36, 48, 54, 42, 60, 36 8. Find the mean, median, mode, and range. median: mode: range: 9. Find the standard deviation, round it to the nearest whole number. 10. Set up a normal distribution curve. 11. If there were 120,000 people, how many should be between 55 and 73? 12. If there were 26,000 people, how many should be less than 64?

Solution

mean :

(36 + 48 + 54 + 42 + 60 + 36) / 6

mean = 46

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median :
Arrange in ascending order first

36 , 36 , 42 , 48 , 54 , 60

We have 6 terms
so the two middle termsare the 3rd and 4th terms
42 and 48

So, median = avg of 42 and 48
(42 + 48) / 2

45

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mode :
36 occurs most frequently

So, mode = 36

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Range :
Largest - Least

60 - 36

24

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9)
Standard deviation :

Comes out to

10