In a certain​ city, projections for the next year indicate there is a​ 20% chance that electronics jobs will increase by 1000​, a​ 50% chance that they will increase by 300​, and a​ 30% chance they will decrease by 700.   Find the expected change in the number of electronics jobs in that city in the next year.   The expected change is an increase of _jobs.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.