after a pet is diagnosed as being sick, dr. chun, the
veterinarian, takes the temperature of every other pet in the
center. he is very careful to clean and cool the
thermometer after taking each animal's temperature. he
then records data on a table.
it was inadequate.
it was false.
it was recorded by one person.
it was not recorded in a lab.
even though none of the other pets appear sick, dr. chun
finds that they all have very high temperatures. the next
day, he learns that the thermometer had been damaged
before, and a new thermometer shows that all the pets
have normal temperatures

what was the most likely problem with the first set of
data?