Statistical tests

Question 1

When is chi-squared used?

Answer 1

For frequencies

Question 2

When would the t-test be used?

Answer 2

Looking for differences between measurements of the same variable in a sample.

Question 3

Spearman’s rank

Answer 3

Looking for a correlation between measurements of a different variable from the same sample.

Question 4

When is Index of diversity used?

Answer 4

Investigating species richness