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Mathematics 13 Online

OpenStudy (anonymous):

A set of 100 numbers has a standard deviation of 10. To each of the numbers, 5 is added. What effect does this addition have on the standard deviation?

14 years ago

jimthompson5910 (jim_thompson5910):

Think of the distribution as some curve (maybe it's a bell shaped curve). What happens to each point if you add 5 to it?

14 years ago

OpenStudy (anonymous):

standard deviation has no effect.

14 years ago

jimthompson5910 (jim_thompson5910):

exactly, you nailed it

14 years ago

jimthompson5910 (jim_thompson5910):

the shape and spread of the distribution will remain the same no matter how far or how much you shift it (in either direction)

14 years ago

OpenStudy (anonymous):

okay can u help me with one more please?

14 years ago

jimthompson5910 (jim_thompson5910):

sure

14 years ago

OpenStudy (anonymous):

|dw:1337400281745:dw| on the frquency side the number from top to bottom are 2,5,10,25,4,4

14 years ago

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