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this is a question that is really making me struggle and i dont understand the point of it and how it works..... lets say

i had some random data: 
the mean is 88
and the standard dev = 5 

what if i added another number such as 88 lets say: how would it affect your mean and standard dev? 

what if i added 50 how would it affect your standard dev and mean?

how does one make the mean increase but the standard deviation stay the same?? 

I dont understand how certain data values can affect them,,,thats just my general question: above is some random data i made up :")

thank you so much, i have an exam tomorrow and i really dont get these things. 

thank you again. 

 Dec 3, 2019

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