Unemployment info for each region in the U.S. in March of 2013

bluewater said:

Maybe my brain is stuck, but I cannot seem to figure out the mean and standard deviation just from the information listed below.

The unemployment information for each region in the U.S. in March of 2013 is displayed in thousands:
Midwest: 2,525.6
Northeast: 2240.2
West: 3004.6
South: 4106.9

1. What are the mean and standard deviation unemployment numbers for each of the regions?
2. How many regions fall more than 1 standard above the mean?
3. How does this number compare with the number expected from the theoretical normal curve distribution?

Thank you in advance!

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bluewater said:

No. that is why i am confused on figuring out even the first question. Here is the verbatim question from the page.


Problem set 4: use the following table to answer questions 20-22 (25 pts total):
This table displays unemployment information for each region in the United States in March 2013. The unemployment numbers listed in the table are thousands. For example, the Midwest was home to 2,525,600 unemployed residents when data were collected.

Unemployment (in thousands) in the United States, 2013:
Midwest	2,525.6	West	3,004.6
Northeast	2,240.2	South	4,106.9

1. What are the mean and standard deviation unemployment numbers for all regions (15 pts)? You can use this working sheet to help you answer this question.

Region	Unemployment#	Y-mean	Square of (Y-mean)
midwest	2525.60
northeast	2240.20
west	3004.60
south	4106.90

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bluewater said:

Thank you. What was different from the original post and how did you calculate the y-mean?

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