The range and standard deviation of a distribution are a. measures of central tendency b. measures of variability c. types of transformed scores d. types of percentiles

On your wedding day your lover gives you a gold ring of mass 3.67 g. 48 years later its mass is 3.44 g. on the average how many atoms were abrated from the ring during each second of your marriage? the atomic mass of gold is 197 u. don't enter units