Quantitative Methods 2017
What is under the hood of your statistical software? • Compare two normally distributed series with equal variance:
1 n 1
1
2 (
x 1
- x
= x
1 - x
– s
) t
( df
+ df
m 1
- m 2
+
)
2
t =
2
1
0.975
1
2
n
1
1
2
2 (
s
+
)
1
n
n
1
2
Made with FlippingBook - Online catalogs