Natural experiments are those which occur as part of a natural process, where neither the setting nor the randomi zation process are controlled.
Indicate whether the statement is true or false
Question 2
Precoding is _________________.
a. the systematic reorganization of raw data into a format that is computer readable
b. a set of rules stating that certain numbers are assigned to variable attributes
c. a document describing the coding procedure and the location of data for variables in a format that computers can use
d. the act of writing the code categories directly on the questionnaire
e. a data field