Mammal Brain Size and Litter Size Relationship

This dataset, brain_litter_mammals_df, is a data frame comparing relative brain weights between 96 mammalian species divided by reproductive strategy: 51 species with small litters (<2 offspring) and 45 species with large litters (≥2 offspring).

Usage

data(brain_litter_mammals_df)

Format

A data frame with 96 observations and 2 variables:

BrainSize

Numeric: Relative brain weight measurement (encephalization quotient or similar metric)

LitterSize

Factor with 2 levels: Reproductive strategy ("Small" (<2) and "Large" (≥2) litter sizes)

Source

Data taken from the Sleuth3 package version 1.0-6. Original reference: Ramsey, F.L. and Schafer, D.W. (2002) The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

Details

The dataset name has been kept as 'brain_litter_mammals_df' to avoid confusion with other datasets in the R ecosystem. This naming convention helps distinguish this dataset as part of the NeuroDataSets package. The suffix 'df' indicates that the dataset is a data frame. The original content has not been modified.