The term "data abstraction" means that we do not need to know the implementation details of a data structure in order to use it. we simply need to know what the operation methods do (so we know when to use them) and their signatures (so we know how to use them).
a. true
b. false

Your question:high schoolcomputers and technology 50+25 ptsharry needs to use a type of graph in a spreadsheet to show variations in data over a specific period. what type of graph or chart is most useful for this purpose? a is particularly useful for showing variations in data over a specific period. our teams answer: bar graph : )our teams aim's to and we are happy to ! if the answer is wrong notify us quickly for we can fix it quickly! : )-experimentsdiy

There’s also the option of making a new one