Physiology Lab: Statistics Tutorial
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