anonymous
  • anonymous
In a small company of 10 people the salaries are as follows: 5 people earn $25,000, 3 earn $27,000, 1 earns $34,000, and the owner earns $60,000 What is the mean and standard deviation (to the nearest dollar) of their salaries? Mean salary:_______________ $a0 Standard Deviation: ______________$a1
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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kobeni-chan
  • kobeni-chan
Well for the mean you need to add count divide. Add 25,000 (5 times), 27,000 (3 times), 34,000, and 60,000. Count the number of people (10), and then divide the sum by that number.
anonymous
  • anonymous
what should i get
kobeni-chan
  • kobeni-chan
Well, what did you get?

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More answers

anonymous
  • anonymous
hold up
anonymous
  • anonymous
im confused lol
kobeni-chan
  • kobeni-chan
Lol ok focus on the adding first. You should be adding 10 numbers. 25000+25000+25000+25000+25000+27000+27000+27000+34000+60000
anonymous
  • anonymous
300000
anonymous
  • anonymous
???????
kobeni-chan
  • kobeni-chan
Yep :) Then you need to divide by the number of people
anonymous
  • anonymous
divide it by 10
kobeni-chan
  • kobeni-chan
Yes
anonymous
  • anonymous
30000
anonymous
  • anonymous
the mean salary is 300000 and the standard deviation is 30000
anonymous
  • anonymous
???
kobeni-chan
  • kobeni-chan
Not quite. The 30,000 that you got is the mean.
anonymous
  • anonymous
well then now what
kobeni-chan
  • kobeni-chan
https://www.mathsisfun.com/data/standard-deviation-formulas.html Now you have to subtract the mean from each number and square the result.
anonymous
  • anonymous
??????????
kobeni-chan
  • kobeni-chan
The first number (going back to the original problem) is 25,000. Subtract 30,000, and then take that difference and square it (multiply it by itself).

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