Description

An experiment on the effects of a hormone on blood calcium levels in robins

Format

A data frame with 20 observations on the following 5 variables.

Bird

ID number for each bird (1 to 20)

Sex

female or male

Hormone

Treated with hormone (no or yes)

Group

Combined Sex and Hormone (F No, F Yes, M No, or M Yes)

Ca

Blood calcium level (mg per 100 ml)

Details

An experiment looked at the effects of treatment with a hormone for increasing the concentration of calcium in birds. Twenty birds (robins) were used in the study, ten male and ten female, equally divided between the hormone and no hormone treatments.

Source

Bliss, Chester (1970), Statistics in Biology, McGraw-Hill