Statistics Homework Help

I have till 5/9/16 to turn this in. This is a take home exam and I desperately need the answers to keep my A in

Calculate the chi square statistic.

Get Your Custom Essay Written From Scratch
We have worked on a similar problem. If you need help click order now button and submit your assignment instructions.
Just from $13/Page
Order Now

χ2 =

Short answer, 5 points each.

  1. Why does the tobt change when we use dependent v. independent samples t-tests?

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

  1. Why does the tcrit change when we use dependent v. independent samples t-tests?

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

  1. How can we figure out how many people we have in a sample, given a specific degrees of freedom? Answer for both independent and dependent samples tests.

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

  1. Which is preferable, a dependent samples test or an independent samples? Give two reasons why.

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

  1. Explain pooled variance.

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

  1. Given the choice, we won’t use the chi-square test. What’s so wrong with it? What are the assumptions associated with the chi-square?

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

Extra credit.

Why do we care about homogeneity of variance?

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________

______________________________________________________________________________