Courses for Test Preparations

286 free courses & lectures available for Test Preparations

Kaiser-Meyer-Olkin (KMO) Test - How to Interpret Properly

by how2stats on Youtube Youtube

Duration: 0.12 hours

Many sources suggest that a KMO value of larger than .50 suggests the data are appropriate for factor analysis. In this video, I demonstrated that this suggesting ...

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About Channel:
Check out all of the videos here: http://how2stats.blogspot.com.au/p/home.html This channel is d...

Grubbs Outlier Test - Introduced and Demonstrated

by how2stats on Youtube Youtube

Duration: 0.14 hours

I discuss and demonstrate Grubbs' Outlier Test. Also known as the extreme studentized deviate test; maximum normed residual test. Grubbs, F. E., & Beck, G.

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About Channel:
Check out all of the videos here: http://how2stats.blogspot.com.au/p/home.html This channel is d...

Welch's F-test vs Brown-Forsythe F-test: Which Should You Use and When?

by how2stats on Youtube Youtube

Duration: 0.13 hours

I describe the pros and cons of the Welch's F-test and the Brown-Forsythe F-test for unequal variances and unequal sample sizes. Overall, the Welch's F-test is ...

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About Channel:
Check out all of the videos here: http://how2stats.blogspot.com.au/p/home.html This channel is d...

A More Powerful Paired Samples t-Test? Yes!

by how2stats on Youtube Youtube

Duration: 0.1 hours

A describe a method to test the difference between two dependent means that will often be more powerful than the conventional paired samples t-test.

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About Channel:
Check out all of the videos here: http://how2stats.blogspot.com.au/p/home.html This channel is d...

Chi-Square Test on SPSS

by Andy Field on Youtube Youtube

Duration: 0.21 hours

Tutorial on doing the Chi-Square Test on SPSS. Covers material in Chapter 18 of my book Discovering Statistics Using SPSS.

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Videos to accompany my 'Discovering Statistics Using ...' textbooks.

Hypothesis Tests on One Mean: Finding the Rejection Region in a Z test

by jbstatistics on Youtube Youtube

Duration: 0.1 hours

I have an updated and improved version of this video available at http://youtu.be/60x86lYtWI4. I find the appropriate rejection regions for one-sample Z tests on ...

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About Channel:
Jeremy Balka's statistics channel, containing some introductory statistics videos. (I am an as...

Calculating Power and P(Type II error) (A One-Tailed Z Test Example)

by jbstatistics on Youtube Youtube

Duration: 0.14 hours

I have an updated and improved video on calculating power and beta available at: http://youtu.be/BJZpx7Mdde4 I work through an example of calculating the ...

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About Channel:
Jeremy Balka's statistics channel, containing some introductory statistics videos. (I am an as...

Hypothesis Tests on One Mean: A t Test Example

by jbstatistics on Youtube Youtube

Duration: 0.11 hours

I have an updated and improved t test example video available at: http://youtu.be/kQ4xcx6N0o4 I work through an example of a one-sample t test, finding the ...

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About Channel:
Jeremy Balka's statistics channel, containing some introductory statistics videos. (I am an as...

The Pooled-Variance t Test as a Regression

by jbstatistics on Youtube Youtube

Duration: 0.1 hours

A look at the relationship between the pooled-variance t test and simple linear regression. I illustrate how the pooled-variance t test can be done as a regression, ...

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About Channel:
Jeremy Balka's statistics channel, containing some introductory statistics videos. (I am an as...

One-Sided Test or Two-Sided Test?

by jbstatistics on Youtube Youtube

Duration: 0.16 hours

A discussion of when to use a one-sided alternative hypothesis and when to use a two-sided alternative hypothesis in hypothesis testing. I assume that the ...

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About Channel:
Jeremy Balka's statistics channel, containing some introductory statistics videos. (I am an as...