Question

a function of sample observitions is known ​

Answer 1

Answer:

An observation in statistics is a value of something of interest you're measuring or counting during a study or experiment: a person's height, a bank account value at a certain point in time, or number of animals. “Observation unit” means the same thing in this context

Answer 2

Answer:

Event sampling, also called frequency counts, involves observation of targeted behaviours or specific events. There is no recording of antecedents or consequences. Event sampling is used to determine how often a specified event or behavior occurs.