More Than 100 Years Ago Thomas Belt Called Attention to the Symbiotic

question 3

Multiple Choice

More than 100 years ago Thomas Belt called attention to the symbiotic association between Acacia shrubs and ants. Acacia encouraged the association by providing food for the ants and a home in ________.

• A) long tendrils
• B) rhizomes
• C) small tubers
• D) large hollow thorns
• E) None of these answers are correct.

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Definitions:

Hypotheses Testing

A statistical method used to determine whether there is enough evidence in a sample of data to infer that a certain condition is true for the entire population.

r Values

r Values, often denoted as the correlation coefficient, measure the strength and direction of a linear relationship between two variables.

Spearman Rank Correlation

A non-parametric measure of correlation that assesses the strength and direction of the association between two ranked variables, useful for ordinal data.

Pearson Correlation

A measure of the linear correlation between two variables, quantifying the degree to which they vary together.