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?

Question

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?

jim_thompson5910 · Answer

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?

anonymous · Answer

standard deviation has no effect.

jim_thompson5910 · Answer

exactly, you nailed it

jim_thompson5910 · Answer

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

anonymous · Answer

okay can u help me with one more please?

jim_thompson5910 · Answer

sure

anonymous · Answer

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