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Pre-Algebra 18 Online
OpenStudy (anonymous):

Uri asked six friends how many different foreign countries they’d been to. He recorded 0, 1, 1, 2, 5, and 9 countries visited. What is the mean absolute deviation of the number of countries visited? Round to the nearest tenth, if needed. A. 0 countries B. 2.7 countries C. 2.9 countries D. 3 countries

OpenStudy (anonymous):

any help plz?? :)

OpenStudy (anonymous):

D.

OpenStudy (anonymous):

just add up all the numbers and divide them by how many numbers there are... in this case they add up to 18, then you divide by six because there are six numbers

OpenStudy (anonymous):

thanks! :D can you help with a fews more plz?

OpenStudy (anonymous):

sure i'll try

OpenStudy (anonymous):

Vicki measured the midnight temperature at four locations in Alaska. The temperatures, in degrees Fahrenheit, were –7, –2, 1, and 4. What is the mean absolute deviation of the temperatures?

OpenStudy (anonymous):

-1 is my answer

OpenStudy (anonymous):

hmmmmm.....both of your answers were wrong :(

OpenStudy (anonymous):

yeah hold on I missed a step... were you taking a test

OpenStudy (anonymous):

yeah I wanted to make sure my answers were right but I got way different

OpenStudy (anonymous):

sorry. can i try again ?

OpenStudy (anonymous):

yeah I cant retake it again but sure :D

OpenStudy (anonymous):

first one is B. and second is either 2.5 or 2.6 if it has to be rounded to the nearest tenth

OpenStudy (anonymous):

yes and no # 2 is 3.5

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