What's the significance? Smelling Parkinson's

What is the meaning of significant at p<0.05? This activity introduces significance by looking at an experiment used to determine whether a woman could actually smell Parkinson's disease. You may also like to explore this interactive data visualisation on prevalence and incidence of Parkinson's in England. This activity is an adapted version of the wonderful resource available from The Stats Medic: https://www.statsmedic.com/apstats-chapter1-day1

By Catherine van Saarloos