HCItest dataset consists of the responses of 651
  students (405 males, 246 females) to Homeostasis Concept Inventory (HCI)
  multiple-choice test. It containts 20 items, vector of gender membership
  and identificator whether students plan to major in life sciences.
data(HCItest)HCItest is a data.frame consisting of 651 observations
  on the 22 variables.
Multiple-choice items of the HCI test.
Gender membership, "0" males, "1" females.
Identificator whether student plans to major in the life sciences.
McFarland, J. L., Price, R. M., Wenderoth, M. P., Martinkova, P., Cliff, W., Michael, J., ... & Wright, A. (2017). Development and validation of the homeostasis concept inventory. CBE-Life Sciences Education, 16(2), ar35. 10.1187/cbe.16-10-0305
HCIkey for key of correct answers for HCI
HCI for HCI dichotomous dataset
HCIdata for HCI full dataset
HCIgrads  for HCI dataset of graduate students
HCIprepost for HCI pretest and posttest scores
HCItestretest for HCI test-retest dataset