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gabbyalicorn
 one year ago
A music shop has 5 different brands of guitar strings. The 5 different brands sell for $16, $20, $15, $11, and $13.
What is the mean absolute deviation of the prices? Round to the nearest cent, if necessary.
@data_LG2
gabbyalicorn
 one year ago
A music shop has 5 different brands of guitar strings. The 5 different brands sell for $16, $20, $15, $11, and $13. What is the mean absolute deviation of the prices? Round to the nearest cent, if necessary. @data_LG2

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gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.1The mean is 19. Now I need help with the rest.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Do you know the formula for MAD? Here it is how it looks like: dw:1434479283962:dw It will be a long process... Steps: 1. You already find the mean :) 2. Get the difference of the mean from each value 3. Get the sum of each differences 4. Then divide it by the number of the data set.

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.1so difference = subtracting right? but what do i subtract it (19) with?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0wait, for the mean are you sure you'll get 19?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0what is 16+20+15+11+13 ?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yep :) Now we got the same thing. Step number two: \(\sf xx_{mean}\) For example, you have x= 16 and xmean is 15, so 1615 is 1. Do this for x=20, x= 15, x=11 and x=13 and tell me what you get :)

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.120  15= 5 11 13= 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0hmm.. given datamean so it will be like 1615 = 1 2015 = ? 1515= ? 1115 =? 1315 = ?

gabbyalicorn
 one year ago
Best ResponseYou've already chosen the best response.12015 = 5 1515= 0 1115 = 4 1315 = 2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0right, since we are getting the absolute values, we'll ignore the negative differences:) So far we have the differences: 1, 5, 0, 4, 2 now let's move to step 3:dw:1434479892954:dw Add the values you get from step 2 :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0you forgot to add the difference of 1615 :)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0yes! now let's go one with the final step. Divide that sum to the number of given data set, which is 5.. so 12/5 is?
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