anonymous
  • anonymous
What is the means-to-MAD ratio of the two data sets, expressed as a decimal to the nearest tenth? Data Set 1: {14, 18, 21, 15, 17} Data Set 2: {15, 17, 22, 20, 16}
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
I got my questions answered at brainly.com in under 10 minutes. Go to brainly.com now for free help!
anonymous
  • anonymous
I think its 1.5
anonymous
  • anonymous
@iGreen
YoungStudier
  • YoungStudier
Ok, so what is the mean for each data set?

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More answers

anonymous
  • anonymous
@Luigi0210
YoungStudier
  • YoungStudier
I am literally doing this stuff right now in my math course.
anonymous
  • anonymous
umm xD
anonymous
  • anonymous
1 sec
anonymous
  • anonymous
for set 1: 17 and Set 2: 18
YoungStudier
  • YoungStudier
Ok, gimme one second, I have to look up the formula in my book and I'll double check the things as we go through them.
anonymous
  • anonymous
ok xD
anonymous
  • anonymous
Wait the answer would be 1.1?
anonymous
  • anonymous
Because you divide 18 by 17
YoungStudier
  • YoungStudier
urm, one moment, I'm helping two other people as well so I gotta check the means quick
anonymous
  • anonymous
ok
anonymous
  • anonymous
I know its that because i retook them Because i didnt pass it the first time Btw not a test But i did get to retake it
YoungStudier
  • YoungStudier
Ok, so the means are right, now we have to find the MAD
anonymous
  • anonymous
But the questions did change
anonymous
  • anonymous
xD
anonymous
  • anonymous
how do you get mad?
anonymous
  • anonymous
For first one it is 2 and 2nd one it is 2.4
YoungStudier
  • YoungStudier
I'll double check it, one moment
anonymous
  • anonymous
MAD - Mean absolute deviation of a component of a data set is the total difference between that component and a given point. In general, the central tendency is the measure of a point from which the deviation is measured, more frequently the median or sometimes the mean of the data set. The Mean Absolute Deviation also called as average deviation of a data set {x1, x2, ..., xn} is the average of the absolute deviations and is a abstract statistic of statistical distribution or set of data. The mean absolute deviation often abbreviated as MAD and calculated from the formula
anonymous
  • anonymous
Total Inputs(N) =(15, 17, 22, 20, 16) Total Inputs(N)=5 Mean(xm)= (x1+x2+x3...xN)/N Mean(xm)= 90/5 Means(xm)= 18 ------------------------------------------- MAD= 1/(N)*(|x1-xm|+|x2-xm|+..+|xN-xm|) =1/5(|15-18|+|17-18|+|22-18|+|20-18|+|16-18|) =1/5(3+1+4+2+2)) =2.4
YoungStudier
  • YoungStudier
Ok, so your MAD are correct
anonymous
  • anonymous
:)
YoungStudier
  • YoungStudier
now we subtract the first data set mean from the second data set mean
YoungStudier
  • YoungStudier
so 17-18=?
YoungStudier
  • YoungStudier
@MasterTeemo
anonymous
  • anonymous
Ok back @YoungStudier
anonymous
  • anonymous
-1
YoungStudier
  • YoungStudier
ok, so now we divide that by the larger MAD
anonymous
  • anonymous
6.4?
anonymous
  • anonymous
so 6.4/-1?
YoungStudier
  • YoungStudier
mm, no. Hold on.
anonymous
  • anonymous
wait it was 2.4 xD
YoungStudier
  • YoungStudier
So it would be -1/2.4=?
anonymous
  • anonymous
yeh
anonymous
  • anonymous
-0.41666666666
anonymous
  • anonymous
xD
anonymous
  • anonymous
0.4? is the answer?
YoungStudier
  • YoungStudier
Do you have any answer choices for this one?
anonymous
  • anonymous
nope
anonymous
  • anonymous
its a type in
YoungStudier
  • YoungStudier
does it say to round to the nearest number or somethin?
YoungStudier
  • YoungStudier
@MasterTeemo ?
anonymous
  • anonymous
Yep
anonymous
  • anonymous
expressed as a decimal to the nearest tenth?
YoungStudier
  • YoungStudier
One moment
anonymous
  • anonymous
would it have been 18-17 then 1/2.4?
anonymous
  • anonymous
then the answer be 0.4?
anonymous
  • anonymous
or no?
anonymous
  • anonymous
http://ncalculators.com/statistics/mean-absolute-deviation-calculator.htm is what i used to get the MAD
YoungStudier
  • YoungStudier
Nope, -0.42 www.calculatorsoup.com/calculators/math/roundingnumbers.php type the number into the calculator
anonymous
  • anonymous
But i has to be -0.4 xD
anonymous
  • anonymous
it*
YoungStudier
  • YoungStudier
did you type it in?
anonymous
  • anonymous
yep
YoungStudier
  • YoungStudier
so it is -0.42
anonymous
  • anonymous
-0.4
anonymous
  • anonymous
Because the bar thing has a dropdown choice you you have to pick tenths
YoungStudier
  • YoungStudier
Oh, sorry, I didn't realize. Yes, -0.4 is correct
anonymous
  • anonymous
:)
anonymous
  • anonymous
XD only on question 2 Now time for question 3 :)
YoungStudier
  • YoungStudier
LOL, I forgot about the option. m'kay, do you need help with that one also?
anonymous
  • anonymous
yeh
anonymous
  • anonymous
3/5 XD
anonymous
  • anonymous
Alexander found the means-to-MAD ratio of two data sets to be 0.8. What can he conclude about the distributions? A. They are similar. B. They are somewhat similar. C. They are different. D. They are identical.
anonymous
  • anonymous
ill open new questions and tag you and give you 5 medals k?
YoungStudier
  • YoungStudier
ok...
anonymous
  • anonymous
xD dont worry i wont lie like most people do
YoungStudier
  • YoungStudier
Oh no, I've never had that happen to me. I don't actually really care that much about the medals LOL
anonymous
  • anonymous
LOL
anonymous
  • anonymous
So The answer would be B for this next q?
YoungStudier
  • YoungStudier
Ok, so what do you think the answer is to the second one you posted here?
anonymous
  • anonymous
B?
YoungStudier
  • YoungStudier
mmm, no.
anonymous
  • anonymous
xD
anonymous
  • anonymous
oh wait its 0.8 so no
anonymous
  • anonymous
would it be Identical?
YoungStudier
  • YoungStudier
Remember: If the ratio is less than or equal to one, the two distributions are similar. What do you think the answer is now?
anonymous
  • anonymous
D?
YoungStudier
  • YoungStudier
I don't remember reading anything about ratios being identical in the lesson, do you?
anonymous
  • anonymous
nope xD because i really didnt read it
anonymous
  • anonymous
i kinda read part but not all
anonymous
  • anonymous
so C? xD
YoungStudier
  • YoungStudier
Reread what I said a little bit above. It's not C
anonymous
  • anonymous
oh ok So A?
anonymous
  • anonymous
xD sorry wasnt paying attenchen
YoungStudier
  • YoungStudier
Yep! A is correct. XD I'm no iGreen, but hey, I actually read through this lesson (I haven't done the bookwork or test yet. LOL)
anonymous
  • anonymous
Some of my friends just said it was D xD
anonymous
  • anonymous
majesty777: Nope D, they are identical because it says TWO sets of data of 0.8
YoungStudier
  • YoungStudier
Hm..... Okay....Now you made me confused. O_O
anonymous
  • anonymous
xD
anonymous
  • anonymous
majesty777: Well it says two sets of the SAME 0.8 that is identical
anonymous
  • anonymous
Who DO I Beleve?
anonymous
  • anonymous
@surjithayer
anonymous
  • anonymous
ok ill go with a
anonymous
  • anonymous
Data Set 1 has a mean of 54 and a MAD of 4. Data Set 2 has a mean of 60 and a MAD of 2. What can you conclude about the two distributions? Choose exactly two answers that are correct. A. The means-to-MAD ratio is 3. B. The means-to-MAD ratio is 1.5. C. The distributions are similar. D. The distributions are somewhat similar.
anonymous
  • anonymous
B and C?
YoungStudier
  • YoungStudier
B is correct, but not C
anonymous
  • anonymous
So B AND D?
YoungStudier
  • YoungStudier
And the question with -0.4, I was wrong, that is actually 0.4 (positive) because of the absolute value lines around the mean-mean/MAD larger
anonymous
  • anonymous
oh ok
anonymous
  • anonymous
Hailey records the weights of five dogs of one breed and five dogs of another breed. What can she infer about the weights of Breed 1 dogs and Breed 2 dogs? Breed 1: {45, 38, 49, 52, 51} Breed 2: {36, 35, 44, 50, 40} A. Breed 1 dogs and Breed 2 dogs have similar weight distributions. B. Breed 1 dogs and Breed 2 dogs have somewhat similar weight distributions. C. Breed 1 dogs and Breed 2 dogs have no overlap in their weight distributions. D. Breed 1 dogs and Breed 2 dogs have identical weight distributions.
YoungStudier
  • YoungStudier
Yes, It's B and D for the one
YoungStudier
  • YoungStudier
Not this one, the one before, ugh sorry, I thought it posted, guess not...
anonymous
  • anonymous
Yeh
anonymous
  • anonymous
I know
anonymous
  • anonymous
MAD of Breed 1: 4.4 Mean: 47 MAD of Breed 2: 4.8 Mean: 41
anonymous
  • anonymous
47-41/4.8 = 1.25
YoungStudier
  • YoungStudier
So: If the ratio is between 1 and 2.5, then the distributions are somewhat similar.
anonymous
  • anonymous
D Or B?
anonymous
  • anonymous
Ok Ima See What I got XD
anonymous
  • anonymous
Are you sure the answers you told be are correct?
anonymous
  • anonymous
Because i need this done xD
YoungStudier
  • YoungStudier
IT would be B. I believe so, if you don't believe me try googling them, a couple open study, brainly, or yahoo answers might show up.
anonymous
  • anonymous
:D 100%!
anonymous
  • anonymous
Best PERSON ON OS!
anonymous
  • anonymous
You AND Igreen ARe the BEst!
anonymous
  • anonymous
Well Gtg xD
YoungStudier
  • YoungStudier
LOL, thanks. ^_^ I just helped you through it, you did the hard part. :D Good job!
YoungStudier
  • YoungStudier
See ya!

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