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