True or False, and explain briefly:

(a) If you add 7 to each entry on a list, that adds 7 to the average.
(b) Ifyouadd7toeachentryonalist, that adds 7 tot he SD.
(c) If you double each entry on a list, that doubles the average.
(d) If you double each entry on a list, that doubles the SD.
(e) If you change the sign of each entry on a list, that changes the sign of the average.
(f) If you change the sign of each entry on a list, that changes the sign of the SD.