Assignment 1: Discussion: Generating Research Questions for z-Tests and t-Tests

Suggest one psychological research question that could be answered by each of the following types of statistical tests:

z test
t test for independent samples, and
t test for dependent samples

“The greatest moments are those when you see the result pop up in a graph or in your statistics analysis – that moment you realise you know something no one else does and you get the pleasure of thinking about how to tell them.”                                  Emily Oster
For this assignment, you can choose one research question and modify it to fit each of the statistical tests. If you find it easier, you can choose three different research questions; one for each test.
A useful strategy for this assignment is to first jot down the requirements for each type of test and what each is typically used for. Then you can devise your research question and tailor it to meet the requirements.
Be sure that you understand the difference between independent and dependent samples before you attempt to respond to this assignment. Your text has extensive discussions of both types (dependent samples are also called related samples).
I think you will find the following videos very helpful in understanding the difference between z-tests and t-tests and when to use each of them.

Dr. N.



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