I'm not making any special contribution to the topic, just translating...Raffiki's question:
Hello dear members of the forum, I was wondering if you could help me with a little problem I have with my Classpad 300. The thing is... I don't know how to interpolate!
Suppose we have the following values (just an example):
Factor --- Interest
1.276 ---- 5
1.338 ---- 6
1.3142 --- X
I need to know what is the value of interest X by interpolation. Could you explain how to do it step by step on the Classpad? I would highly appreciate it.
There are many ways of doing it, I'll explain one:
You need to make a linear regression:
In the statistics application, copy the values of "X" in List1, in your case they'd be 1.276 and 1.338. Then copy in List2 the values of "Y": 5 and 6.
Then in the CALC
menu press Linear Regression
, a window shows up where by default ListX and ListY are linked to List1 and List2, respectively, and the frecuency is 1.
From here on, you can find the value of "Y" for a given value of "X" by replacing X in the regression equation. In your case the equation is Y=16.129032*X-15.58064
Replacing the value X=1.3142, you get Y=5.616.
Edited by ZweiLynx, 16 May 2009 - 02:30 AM.