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I am trying to figure out what test to use in order to solve a fairly basic concept. I am not sure if this is a cenvergence test or a significance test.

Example: Consider the following data

x y

1 30

2 22

3 18

4 12

5 10

6 9

7 8

8 6

9 5.5

10 5.8

I want to know at what x does the series of data start to become not significantly changing any more. If I simply know what type of test to be using, I think I am capable of solving my problem.

Thank you for your help!

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# Testing when a series becomes not significantly different anymore

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