dummy variable
one that takes the value 0 or 1 to indicate the absence or presence of some categorical effect that may be expected to shift the outcome
en-US/ˈdʌmi ˈvɛɹiəbəl/
en-GB/dʌmiː ˈvɛəɹɪəbl/
one that takes the value 0 or 1 to indicate the absence or presence of some categorical effect that may be expected to shift the outcome