A data set is the collection of all the data in the form of tabular data. In the data set, individuals are define as object which basically describe by the set of value.
A data set basically consist of many components like individual elements define as entities in which the data are being collected and provide the information. Variables are the charactertics of the data set elements.
I think the correct answer would be to multiply. Multiplying a number by ten would increase its value depending on how many ten is multiplied and this corresponds to a certain unit. Hope this answers the question. Have a nice day.