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Arisa [49]
3 years ago
13

Find the mean absolute deviation of the following numbers. 10, 8, 5, 12, 20

Mathematics
1 answer:
kicyunya [14]3 years ago
4 0
The mean absolute deviation of the following set of data is 4.5
Step-by-step explanation:
We need to find the mean absolute deviation of the following set of data.
10,20,12,4,18,8,14,18
For finding mean absolute deviation, first we need to find the mean of the given data set.
The formula used to calculate mean is:
Sum of all data points: 10+20+12+4+18+8+14+18 = 104
Number of data points = 8
So, mean is:

Now, we will subtract 13 from the given data points:
10 - 13 = -3
20 - 13 = 7
12 - 13 = -1
4 - 13 = -9
18 -13 = 5
8 - 13 = -5
14 - 13 = 1
18 - 13 = 5
We will take absolute values i.e |-a|=a
So, now the numbers will be:
3,7,1,9,5,5,1,5
We will now find absolute mean deviation by finding mean of newly calculate values
Sum of all data points = 3+7+1+9+5+5+1+5
Number of data points = 8

So, the mean absolute deviation of the following set of data is 4.5
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PLEASE HELP ITS DUE IN 5 MIN Solve for x in the following equation and upload a picture of your work step-by-step
Sergeu [11.5K]

Answer:

1.25 = X

Step-by-step explanation:

5-2x+2=12-4x-2x

Combine all like terms here.

7-2x=12-6x

Add 2x on both sides.

7=12-4x

Subtract 12 on both sides.

-5=-4x

Divide by -4.

1.25=X

5 0
3 years ago
What percent of 900 is 18
horsena [70]

Fastest method for calculating what percent of 900 is 18

Assume the unknown value is 'Y', and 18 of 900 can be written as:

Y =  

18

900

By multiplying both numerator and denominator by 100 we will get:

Y =  

18

900

x  

100

100

=  

2

100

Y = 2%

Answer: 2 percent of 900 is 18

If you want to use a calculator, simply enter 18÷900x100 and you will get your answer which is 2

7 0
3 years ago
Read 2 more answers
3. The shaded part of the model shows what part of a
Tcecarenko [31]

Answer:

\dfrac{1}{6}

Step-by-step explanation:

From the diagram, the model is divided into 6 equal parts.

The shaded part of the model shows what part of the garden is planted with peas.

Since, 1 part out of 6 is shaded.

The fraction which names the shaded part is therefore: \dfrac{1}{6}

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7 0
2 years ago
Which algebraic expression represents the following:the sum of four times a number and six?
Drupady [299]
Four times a number -- 4x

sum (+) of 4 times a number and 6

4x + 6
8 0
3 years ago
Work out the difference in minutes between 1 hour 25 minutes and 1 1/4 hours step by step please :)
Maru [420]

\huge\boxed{\boxed{\bold{10\ \bftext{minutes}}}}

\hrulefill

First, let's change both of these times into just minutes. (We know that one hour is sixty minutes.)

\text{First time: } 1*60+25=60+25=85

\text{Second time: } 1*60+\frac{1}{4}*60=60+15=75

Now, just subtract:

85-75=\large\boxed{10}

3 0
3 years ago
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