Quantitative Methods 2017
What is under the hood of your statistical software? • Compare two normally distributed series with equal variance:
x
- x
1
2
t =
Test quantity. Note common variance
1
1 2 ( 1 n 1
s
+
)
n
2
e = 2[1 - F
( t )]
t ( df 1
+ df 2 )
Two sided test
Cummulative distribution function.
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