What is the chi-squared test? The chi-squared test, often written as χ 2 test, is a statistical hypothesis test used in the analysis of categorical variables to determine whether observed data are ...

This is a free preview PowerPoint slideshow, containing approximately half the slides, is also available. The full, 58 slide PowerPoint presentation covers the content of “Chi-squared Tests” within ...

pptx, 3.22 MB docx, 16.09 KB docx, 301.52 KB docx, 302.47 KB This lesson guides students through the use of the chi-squared test to test the significance of differences between observed and expected ...

"Significance" has a very particular meaning in biology thanks to statistics. How does this term prove an experiment's results are worth special attention?