BRAINCAKEStudent's t-Test
The Student's t-test tests whether there is a significant difference between the means of two sets of data, for example the mean shell height of limpets on an exposed shore and on a sheltered shore. It is used when the data are continuous and approximately normally distributed.
t = (x̄1 − x̄2) ÷ √(s12/n1 + s22/n2)
where x̄ is the mean, s is the standard deviation and n is the number of measurements in each sample.
Sign in free to see the rest of this lesson, the R.E.C.I.P.E. recall steps and the quiz
BrainCake is free. Make an account in seconds and pick up where this page stops.
More in The Nature of Ecosystems
- Quadrats
- ACFOR Scale
- Point Quadrats
- Permanent Quadrats
- Transects
- More Ecological Techniques
- Hypothesis Testing
- Spearman's Rank Correlation Coefficient
All 39 lessons in The Nature of Ecosystems · All Edexcel A-level Biology topics