Abayomi-Rufai Obarinde
Last answered:

05 Jan 2023

 Posted on:

01 Jan 2023
0

Resolved: Different between t-test and z-test

in Statistics / Test for the mean. Dependent samples

Why are we saying there is no variance when we are able to calculate the standard deviation

1 answers ( 1 marked as helpful)
Ned Krastev
Instructor
Posted on:

05 Jan 2023
2

Hi,
We don't say there is no variance but that we don't know it yet.
Best,
Ned

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