## Statistics Bootcamp

Prism is a powerful tool, but without an understanding of the fundamentals of statistics, it can be intimidating. This video series gives you the statistical background you need to start performing analyses in Prism with confidence.

Presented by Dr Anne Segonds-Pichon, Bio-Statistician from the Babraham Institute.

#### Using Data Exploration to Check Statistical Assumptions

INSIDE THE VIDEO

Parametric tests, such as the unpaired t-test, have important assumptions that need to be verified before an analysis can be carried out. This video discusses those assumptions and how to verify them using statistical tests and data exploration graphs.

LENGTH

10 minutes

LEARN HOW TO:

• The two main assumptions for parametric analyses
• The two main types of departures from Normality
• How to test for Normality
• Graphs for data exploration
• How to graphically identify outliers

#### Calculating Sample Size With Power Analysis

INSIDE THE VIDEO

Sample size plays a critical role in every statistical analysis. Learn how power analysis can help you get a large enough sample size to detect the effect you are looking for while avoiding unnecessarily large sample sizes that waste resources.

LENGTH

11 minutes

LEARN HOW TO:

• What power analysis is and why it's needed
• Type I and Type II errors and how they relate to power
• The five parameters that affect power

#### Descriptive Statistics with Prism

INSIDE THE VIDEO

Summarizing your data into a few useful statistics allows you to quickly and concisely see differences between groups and/or trends over time. Measures of center and spread are covered as well as an introduction to confidence intervals.

LENGTH

11 minutes

LEARN HOW TO:

• Median and Mean
• Standard Deviation and Standard Error
• Confidence Intervals

#### How to Perform a Two Sample T Test

INSIDE THE VIDEO

Learn all aspects of an unpaired two sample t test from checking the analysis assumptions to making the correct analysis choices and performing the test.

LENGTH

11 minutes

LEARN HOW TO:

• How to check unpaired t test assumptions
• How to choose between paired and unpaired t tests
• The difference between a one-tailed and two-tailed test

#### Understanding One-way ANOVA

INSIDE THE VIDEO

It's easy to produce a p value, but it's difficult to do good stats. This video walks you through what you should consider before running a one-way ANOVA.

LENGTH

14 minutes

LEARN HOW TO:

• What question you can answer with a one-way ANOVA
• How one-way ANOVA works
• The assumptions in a one-way ANOVA and how to check them
• Familywise error rate and why it is important

#### Understanding Chi-Square and Fisher's Exact Tests

INSIDE THE VIDEO

Running a Chi-square or Fisher's exact test will help you determine whether or not there is a significant difference between two proportions. However, there are a few questions you should consider answering before running each test.

LENGTH

2 minutes

LEARN HOW TO:

• The difference between a Chi-square and Fisher's exact test
• How the Chi-square and Fisher's exact tests work

Analyze, graph and present your scientific work easily with GraphPad Prism. No coding required.