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yes we need formulas in ms excel because ms excel helps us to make calculations more easily.

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Formulas are really easy if you understand them properly.

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when we are collecting data it is hard for us to manually solve the average , sum , min , max in excel so if we have formulas it is easier for us to collect and find answers . there are also many other features in excel which help us to do  many things fast and easy.

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Q1 answer tables are better then graphs in my opinion as tables communicate the information clearly as you just have to find the row and colom and you have your information while in graphs you have to find what line does the bar match up with

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the best graph or a table to record data and to comunicate your data driven message is the bar graph because bar graph can record alot of data in a presentable and neat form.

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Formulas are an extremely easy way to calculate large amounts of data in organized formats. Even though using autosum is easier, formulas help you quickly type in the formulas while keeping your hand on the keyboard