Week3: L3.4, Finding missing values from sample mean & Sample Variance withour using quadratic equations

[Deepa Govind]

Hi @Math team.

This is a question i picked up from another study-site

The sample mean and sample variance of five data values are, respectively, x¯=104\bar{x}=104xˉ=104 and s2=16s^{2}=16s2=16. If three of the data values are 102, 100, 105, what are the other two data values?

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They have solved this using Quadratic equation

We however have not come across this equation in the W3L3.4 , and dont  really know how to use it.

So, How do we solve the same problem without using quadratic equation

 Please advice

[Mathematics 1 Support 2]

Dear learner,

Kindly post the same question in statistics discussion forum.

Thanks and regards 

Vicky Kumar Sharma 

Maths_1 instructor

IITM Online Degree 

[Deepa Govind]

Thank you.

[REKHA T R]

In the question(part 3) discussed in week 3 tutorial 1, if the value of the equipment decreases yearly then why does the person in the question have to buy the equipment at the same cost as in the previous(or early) year(s)...?

please clarify this doubt.