Math links

Excellent student t test-equal and unequal variance

good overview of which to apply 

simple excel calculation t test

Good on confidence interval and population mean

Good on Anova

what statisitics should we use

good for science fair projects

Hypothesis testing

Good- Hypoethesis testing.

what is P value? (goood animation)

Comprehensive statistics

probability - good one

https://www.youtube.com/watch?v=_aBKxnUtIOk

http://www.mathsisfun.com/combinatorics/combinations-permutations-calculator.html

How to choose the right statistical test?

choosing right test

https://www.youtube.com/watch?v=ITf4vHhyGpc

https://www.youtube.com/watch?v=-yQb_ZJnFXw

https://www.youtube.com/watch?v=leHOBf_-9kM

https://www.youtube.com/watch?v=Ke9ttUj7AQc
https://www.youtube.com/watch?v=JgMFhKi6f6Y

https://www.youtube.com/watch?v=0Vj2V2qRU10

 

simple on p value- null hypothesis

 

Many Good Tools for analysis

Good for student t test-maunal and if statement

 

Chi square test in excel

 

https://jessicaaro.wordpress.com/2012/03/25/why-use-the-anova-over-a-t-test/ http://www.differencebetween.net/miscellaneous/difference-between-t-test-and-anova/

Summary: 1.The t-test is used when determining if two averages or means are the same or different. The ANOVA is preferred if comparing three or more averages or means. 2.A t-test has more odds of committing an error the more means are used which is why ANOVA is used when comparing two or more means. Read more: Difference Between T-TEST and ANOVA | Difference Between | T-TEST vs ANOVA http://www.differencebetween.net/miscellaneous/difference-between-t-test-and-anova/#ixzz43qD6jjAQ

ANOVA is based on a comparison of two different sources of variation: ANOVA is the ANOVA F-test-Fisher The average variation of observations within each group around the group mean – The average variation of the group means around the grand mean • The grand mean is the mean of all observations

The advantage of using ANOVA over multiple t-tests is that the ANOVA F-test will identify if any of the group means are significantly different from at least one of the other group means with a single test.

–F = average variability among groups average variability within groups

http://www.csun.edu/~amarenco/Fcs%20682/When%20to%20use%20what%20test.pdf

 

https://statistics.laerd.com/premium/sts/groups-within-one.php

 

Post Hoc analysis

which post hoc to use?  and another discussion.

good example with coco cola

 http://www.sjsu.edu/faculty/gerstman/StatPrimer/anova-b.pdf

http://www.beds.ac.uk/howtoapply/departments/psychology/labs/spss/ANOVA