Question

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}

Answer 1

I think its 1.5

Answer 2

@iGreen

Answer 3

Ok, so what is the mean for each data set?

Answer 4

@Luigi0210

Answer 5

I am literally doing this stuff right now in my math course.

Answer 6

umm xD

Answer 7

1 sec

Answer 8

for set 1: 17 and Set 2: 18

Answer 9

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.

Answer 10

ok xD

Answer 11

Wait the answer would be 1.1?

Answer 12

Because you divide 18 by 17

Answer 13

urm, one moment, I'm helping two other people as well so I gotta check the means quick

Answer 14

ok

Answer 15

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

Answer 16

Ok, so the means are right, now we have to find the MAD

Answer 17

But the questions did change

Answer 18

xD

Answer 19

how do you get mad?

Answer 20

For first one it is 2
and 2nd one it is 2.4

Answer 21

I'll double check it, one moment

Answer 22

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

Answer 23

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

Answer 24

Ok, so your MAD are correct

Answer 25

:)

Answer 26

now we subtract the first data set mean from the second data set mean

Answer 27

so 17-18=?

Answer 28

@MasterTeemo

Answer 29

Ok back @YoungStudier

Answer 30

-1

Answer 31

ok, so now we divide that by the larger MAD

Answer 32

6.4?

Answer 33

so 6.4/-1?

Answer 34

mm, no. Hold on.

Answer 35

wait it was 2.4 xD

Answer 36

So it would be -1/2.4=?

Answer 37

yeh

Answer 38

-0.41666666666

Answer 39

xD

Answer 40

0.4? is the answer?

Answer 41

Do you have any answer choices for this one?

Answer 42

nope

Answer 43

its a type in

Answer 44

does it say to round to the nearest number or somethin?

Answer 45

@MasterTeemo ?

Answer 46

Yep

Answer 47

expressed as a decimal to the nearest tenth?

Answer 48

One moment

Answer 49

would it have been 18-17 then 1/2.4?

Answer 50

then the answer be 0.4?

Answer 51

or no?

Answer 52

http://ncalculators.com/statistics/mean-absolute-deviation-calculator.htm is what i used to get the MAD

Answer 53

Nope, -0.42
www.calculatorsoup.com/calculators/math/roundingnumbers.php type the number into the calculator

Answer 54

But i has to be -0.4 xD

Answer 55

it*

Answer 56

did you type it in?

Answer 57

yep

Answer 58

so it is -0.42

Answer 59

-0.4

Answer 60

Because the bar thing has a dropdown choice you you have to pick tenths

Answer 61

Oh, sorry, I didn't realize. Yes, -0.4 is correct

Answer 62

:)

Answer 63

XD only on question 2 Now time for question 3 :)

Answer 64

LOL, I forgot about the option. m'kay, do you need help with that one also?

Answer 65

yeh

Answer 66

3/5 XD

Answer 67

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.

Answer 68

ill open new questions and tag you and give you 5 medals k?

Answer 69

ok...

Answer 70

xD dont worry i wont lie like most people do

Answer 71

Oh no, I've never had that happen to me. I don't actually really care that much about the medals LOL

Answer 72

LOL

Answer 73

So The answer would be B for this next q?

Answer 74

Ok, so what do you think the answer is to the second one you posted here?

Answer 75

B?

Answer 76

mmm, no.

Answer 77

xD

Answer 78

oh wait its 0.8 so no

Answer 79

would it be Identical?

Answer 80

Remember: If the ratio is less than or equal to one, the two distributions are similar.

What do you think the answer is now?

Answer 81

D?

Answer 82

I don't remember reading anything about ratios being identical in the lesson, do you?

Answer 83

nope xD because i really didnt read it

Answer 84

i kinda read part but not all

Answer 85

so C? xD

Answer 86

Reread what I said a little bit above. It's not C

Answer 87

oh ok So A?

Answer 88

xD sorry wasnt paying attenchen

Answer 89

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)

Answer 90

Some of my friends just said it was D xD

Answer 91

majesty777:
Nope D, they are identical because it says TWO sets of data of 0.8

Answer 92

Hm..... Okay....Now you made me confused. O_O

Answer 93

xD

Answer 94

majesty777:
Well it says two sets of the SAME 0.8 that is identical

Answer 95

Who DO I Beleve?

Answer 96

@surjithayer

Answer 97

ok ill go with a