# Thread: paired t test

1. ## paired t test

I'm working on a paired t test step my step. Step 3 requires me to find $\displaystyle d$ and $\displaystyle d^2$

I got (strange looking E with d besides it) and but I havent found (strange E thing with d^2) I've tried to add it all and divide it by the total number (17). I tried to subtract after-before. I tried to times my answer of 123.5 by sum of all d (the stange looking E with d besides it). I have run out of ways to find it. Just to correct , the answer is 1716.9. I dont know how to get this. Helpppp

Here is the data before:
83.3
86.0
82.5
86.7
79.6
87.3
76.9
94.2
73.4
80.5
81.6
83.8
82.1
77.6
83.5
89.9
86.0

and after:
94.3
91.5
91.9
100.3
76.7
98.0
76.8
101.6
94.9
75.2
77.8
95.2
95.5
90.7
92.5
93.8
91.7