Class Notes for STAT 2230 at University of Guelph

Day 19: Chi-square tests [Feb 27] - so far, all our statistical procedures have been for numeric, continuous variables - ~~~~ - we also know that we could have other types of variables: - ...

Day 17: Paired design [Feb 15] - assumptions of independent samples t-test: - observations are independent - observations are normally distributed - dispersion is equal to ...

Day 12: Analysis [Feb 03] - ///// late - picked up on page 29 - how do we use this to make a statistical hypothesis test? - either: - the two population mean ...

Day 11: Confidence intervals [Feb 1] - what is a confidence interval? - if you repeatedly sample, each sample results in a different ‘80% confidence interval’ - how can I make my...

find more resources at oneclass.com Day 10: States of proteins [Jan 30] - you, too, can have fun with PyMOL! - a FREE educational version of PyMOL is available for download to all st...

find more resources at oneclass.com Day 8: Distribution [Jan 25] - normal distribution - standard deviation will tell you the width/spread of the distribution - 68% lies between M - ​σ a...

find more resources at oneclass.com Day 6: Variability [Jan 20] - how variable is the data? - reasons to estimate dispersion - because variation is a central concep...

Day 1: Intro to the course [Jan 09] - statistics: - the study of the collection, organization, analysis, interpretation, and presentation of data - a tool that scienti...

Day 4: Description of samples [Jan 16] - announcements: - first labs are this week - assignment #1 is now posted on courselink - Wednesday labs (sections 1 and 2) will b...

CorrelationsR value November 23, 201511:34 AM Response variable=Dependent variables: Outcome of a study Explanatory variable=Independent variables: May explain or influence changes in a response variable The goal in most s...

Sampling Design September 12, 20151:24 PM Population: Entire group of individuals about which we want information Sample:Part of the population from which we actually collect information to draw conclusions about the entir...

Probabilities October 9, 20155:24 PM Sample space: Set of all possible outcomes Event: Outcome or set of outcomes. A subset of the sample space Probability=Count of outcomeCount in sample space Mutually exclusive? Can they...

Normal Distributions and Sampling Distributions October 18, 20159:01 PM Normal Distribution Normal distributions are symmetric, single peaked or bell shaped All normal distributions have the same overall shape Must describ...

Anova December 7, 201510:30 AM For comparisons of more than two variables Ha always has to be that there is difference between one of the three variables, not specific way Cant use confidence intervals or t tests to accura...

Confidence Intervals October 25, 201511:47 AM 689599.7 rule for normal distributions Within one standard deviation of the mean, 68 of the population lie Within two standard deviations, 95 lie Within three standard deviatio...

This Guide provides an easy to follow summary of all basic principles that are the foundation to Statistics and Probabilities. Using a combination of charts and sample equations, the key concepts are developed and the esse...