activity 2.1 B. NOW ITS YOUR TURN!
A. write T if the statement is TRUE and F if the statemant is FALSE. 1 any statistical investigation must necessarily be based on acurate data.
2primary data refer to information which is gathered directly from an original source.
3original sources are based on a second-hand ecperience
4 secondary data refer o an information which are taken from an unpublished data
5 questionnaires may be mailed or hand-carried