Physiology Lab: Statistics Tutorial

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Typically the level of significance for physiological experiments is set at alpha= ____ or_____

0.05; 0.01

used to determine whether more than two means are significantly different

ANOVA

Graphs and statistical output will always be presented in _____

R studio

_____ are used to determine whether the two means are significantly different from each other

T- Tests

For one way ANOVA use the _________ post hoc test

Tukey honest significant difference

For a repeated measures ANOVA use a ______ post hoc test

bonferonni procedure

When importing data, change the field separator option to

commas

When the same subjects are tested more than once and you want to compare the means from the two different time points or conditions you use a _______

dependent t- test

For an independent t- test you will need to select the ____ you would like to compare and the _____

groups; response variable

you compare the p value to your predetermined ______

level of significance

What do you type to open R commander in R studio

library (Rcmdr)

To determine which means are different in an ANOVA you should use a _____

post hoc test

If you calculated p- value is less than your level of significance you _____ the null hypothesis

reject

if your chi squared statistic is higher than the value listed in the table then ______ the null hypothesis

reject

When the same subjects are tested more than two times and you want to compare the means from these different time points or conditions you use a

repeated measures ANOVA

What are the two types of ANOVAS

repeated measures and one way

The p values from the post hoc analyses tell you which means are

significantly different

To run a t test go to ____ and then _____

statistics; means

If the p value from an ANOVA is significant, it indicates the means are ____ but does not tell you ____ means are different

different; which

if your calculated p- value is the same or greater than your level of significance you ______ the null hypothesis

fail to reject

if your chi squared statistic is lower than the value listed in the table than _____ the null hypothesis

fail to reject

For a dependent t- test you will need to select the ____ and ____ to run the test

first variable; second variable

When the two groups are not related to each other you use an

independent t test

Indicates the probability that a test statistic is significantly different from the null hypothesis

p- value

What are the 5 statistical tests we will run in physiology?

Chi Square analysis, Dependent T- test, Independent T- Test, One way ANOVA, repeated measures ANOVA

A nonparametric statistical test that is used when you want to compare whether the observed distribution of characteristics in a sample matches what you would expect to obtain according to a specific hypothesis

Chi- Square test

What are the two types of T- tests

Dependent and Independent

What is the format of excel we will use in this class to import into R

Windows comma separated file

When the groups are not related to each other you use a

one way ANOVA

A ____ is an extension of an _____

one way ANOVA; independent t-test


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