MATH SKILLS! Flashcards
Why would you pick and justify using a correlation coefficient?
Investigating an association between two measurements.
Conclusions 101: how do you write em
Basically if the calculated value exceeds the critical at 5% , then its significant. So “You would reject the null hypothesis because the calculated value exceeds the p value at 5%/0.05. This means that there is less than 5% chance that this DIFFERENCE/RELATIONSHIP between _____ is due to chance”.
Why would you pick a student T-test?
Investigating a difference between 2 means. Paired- one person Unpaired- samples from multiple ppl
Chi-squared test When would you use this test?
-When counting how many individuals are in a category (frequencies) -Testing for a difference
What are dilution series? Describe the process
-A serial dilution is the step-by-step dilution of a substance in solution Stock conc- the OG 100% Then you would take 1 part of stock and 9 parts of water= 10” concentration Mix thoroughly in between each dilution. Continue to do this: 1% to 0.1%
Why is a series dilution an advantage?
Lets you make solutions with a v low concentration without having to measure out small volumes which improves accuracy
How would you pick each statistical test?
e.g correlation coefficient (spearman’s rho), chi squared, T-test (paired or unpaired )
How do calculate serial dillutions
