I am having some trouble understanding your notation.
Is suppose to be a summation? Are there bounds for the summation?
What is meant by 24095,7? Is this one number, two numbers, a pair?
Please clarify.
This is the solution, not the original problem.
In general, cannot be determined by just .
I'm guessing that your problem provides data for .
means the sum of all
means the sum of all
They are computed individually. If you read the solution again, it does not say it found from .
Example: If I had data points 1, 5, 7, 8 for
Then
and
.
Kristina
There really is not enough information from what you have told me.
You never actually showed me the problem, only a worked out solution to the problem. There is some information that the solution does not tell me.
From what I gather, the original problem gave you 25 data points. You have not told what the 25 data points are. Without this, it is not possible to know how they computed .
Please tell me what the 25 data points are from the original problem.
Normally the X^2 values are looked up on a table.
Since your original problem was answered, please start a new thread.
Someone with better knowledge of statistics would be better at explaining this (post under statistics with the title "chi-squared rejection region").
Remember to provide all the information about the problem in the new post.