## (Solution document) how to calculate the residaul and cell contribution?

how to calculate the residaul and cell contribution?

So historically in college A, 10% remain at college A for grad school, 50% find a job, 35% go to other schools for grad school, and the rest remain undecided/jobless. In order to study whether there have been any changes, college A hired you to study the present status of 1000 studnets graduated in May of 2017. And you found following numbers

Of 1000 students,

90 remained at college A

480 Found a job

300 went to other schools and

??? remained undecided/jobless.

here, I calculated the real number of ??? was 130, and expected number was 90.

Then I want to find residual and cell contribution. And in this case, what is the null hypothesis? do you reject or accept the null?

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