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mart [117]
3 years ago
7

What is the mean absolute deviation of the data set? 12, 15, 7, 4, 9, 10, 9, 6

Mathematics
1 answer:
bearhunter [10]3 years ago
3 0
Here is an example:
Find the MAD of 2,4,6,8 Step 1 : Find the mean of the data : (2+4+6+8) / 4 = 20/5 = 4 Step 2 : Find the distance between each data and mean. Distance between 2 and 5 is 3 Distance between 4 and 5 is 1 Distance between 6 and 5 is 1 Distance between 8 and 5 is 3
Step 3 : Add all the distances : 3+1+1+3 = 8
Step 4 : Divide it by the number of data : 8 / 4 = 2 2 is the average absolute deviation.
You might be interested in
The sum of three consecutive numbers is –15. What is the LARGEST number?
soldier1979 [14.2K]
Consecutive numbers are numbers that follow one right after the other. One example is the set {6, 7, 8}. We don't know the three consecutive numbers so let's define...

x = first number
x+1 = second number
x+2 = third number

where x, x+1, and x+2 are consecutive numbers

-----------------------------------------

"The sum of three consecutive numbers is -15" meaning that
x+(x+1)+(x+2) = -15

Let's solve for x
x+(x+1)+(x+2) = -15
x+x+1+x+2 = -15
3x+3 = -15
3x+3-3 = -15-3
3x = -18
3x/3 = -18/3
x = -6

So this means

first number = x = -6
second number = x+1 = -6+1 = -5
third number = x+2 = 6+2 = -4

The list of consecutive values is {-6, -5, -4}

They add up to (-6) + (-5) + (-4) = -11+(-4) = -15
which confirms we have the right values

---------------------------------------------------------

In short, the final answer is -4

7 0
3 years ago
У - (-3y)<br><br> Iam confused on how to do this
jeyben [28]

Answer:

The answer is 4y.

Step-by-step explanation:

First you would solve the parentheses, which would be -1(-3y) which would equal positive 3y, and y+3y=4y. I apologize if I misunderstood the problem ^^

8 0
3 years ago
Help help again ..2 more :/ thank you again ..
Elis [28]
8^2 + 12 - 2(8)
64 + 12 - 16
76 - 16
60
so your answer would be 60
8 0
2 years ago
Can anyone answer this algebra question for me?
geniusboy [140]
<h2>Answer:</h2>

As you said, we will solve for x by using substitution.

y = -3x - 17\\-x + 5y = -5\\\\-x + 5(-3x - 17) = -5\\\\-x - 15x - 85 = -5\\\\-16x - 85 = -5\\\\-16x = 80\\\\x = -5

Using what we found for x, we plug it into one of the <u><em>original</em></u> equations to solve for y. I chose the second equation.

-(-5) + 5y = -5\\\\5 + 5y = -5\\\\5y = -10\\\\y = -2

Now, we can create the solution to this system.

<em>A: </em>(-5, -2)

3 0
3 years ago
If the boundary lines of two half planes are parallel, then they have no solution area.
jenyasd209 [6]

Answer: True

Step-by-step explanation:

(Guess dont take this seriously)

8 0
4 years ago
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