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Lexis
 4 years ago
can anyone explain zscores please??
Lexis
 4 years ago
can anyone explain zscores please??

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0normalized values for a data set

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0you can make a nice bell curve out of a data set

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1The zscore basically tells you how many std deviations you are from the mean z = xmean/stdev

Lexis
 4 years ago
Best ResponseYou've already chosen the best response.0mhm i get that much. its the algebraic part  the steps that i have trouble with. the entire thing equals one, yes?

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1yes the area under the entire bell curve is 1. the area under the curve from zscores 1 to 1 is about 0.68 the area under the curve from zscores 2 to 2 is about 0.95 the area under the curve from zscores 3 to 3 is about 0.99

dumbcow
 4 years ago
Best ResponseYou've already chosen the best response.1Example: say you have a bunch of data with mean = 10, std deviation = 2 z =(x10)/2 say x = 6 and 14 z = (610)/2 = 2 , z = (1410)/2 = 2 The probability of finding a data point between 6 and 14 is 95%

Lexis
 4 years ago
Best ResponseYou've already chosen the best response.0ohh ok. thanks! that makes sense :) math is not a strong suit.... the example helps too
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