When Is Time Discrete?
Discrete Time Views Values of Variables as Occurring at Distinct, Separate "Points in Time", or Equivalently as Being Unchanged Throughout Each Non-Zero Region...
Discrete time views values of variables as occurring at distinct, separate "points in time", or equivalently as being unchanged throughout each non-zero region of time ("time period")—that is, time is viewed as a discrete variable.
Is time continuous or discrete?
Time is a continuous variable. You could turn age into a discrete variable and then you could count it. For example: A person's age in years.
What is a discrete-time series?
A discrete time series consists of data points separated by time intervals that are greater than one second. A discrete time series might have: A data-reporting interval that is infrequent (e.g., 1 point per minute) or irregular (e.g., whenever a user logs in)