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4 years ago

How do you find the MAD in math?

2 answers:

8 0

So this might be kind of long. But to find the mean absolute deviation. First you find the mean so add and divide by the amount of numbers there are.
Find the sum of the data values, and divide the sum by the number of data values.
Find the absolute value by subtracting each number by the mean EX: data value – mean.
After you find those new numbers then just add them all together
Divide the sum of the absolute values of the differences by the number of data values.

Hope this helps.

sweet [91]4 years ago

6 0

Find the average of everything and find the average from that average to all the points.

You might be interested in

Factorise:

Nata [24]

Answer:

(2x - a - 2)(5x - a + 5)

Step-by-step explanation:

10x² - 7ax + (a + 2) (a - 5) =
10x² - 7ax + a² - 3a - 10

Factorize by finding the roots

Find the discriminant:

D = b² - 4ac
D = (-7a)² - 4*10*(a² - 3a - 10) =
49a² - 40a² + 120a + 400 =
9a² + 120a + 400 =
(3a + 20)²

Find the roots:

x = (- b ± √D)/2a = (7a ± (3a + 20)) / 20

x₁ = (7a + 3a + 20) / 20 = (10a + 20) / 20 = (a + 2) / 2
x₂ = (7a - 3a - 20) / 20 = (4a - 20) / 20 = (a - 5) / 5

Factorize the expression:

10x² - 7ax + a² - 3a - 10 =
10 (x - x₁)(x - x₂) =
10[x - (a + 2)/2][[x - (a - 5)/5] =
(2x - a - 2)(5x - a + 5)

====================================================

You would also try a shorter but more difficult way:

10x² - 7ax + (a + 2) (a - 5) =
2x*5x - 2ax + 10x - 5ax - 10x + (a + 2) (a - 5) =
2x*5x - 2x(a - 5) - 5x(a + 2) + (a + 2) (a - 5) =
2x(5x - (a - 5)) - (a + 2)(5x - (a - 5)) =
(5x - a + 5)(2x - a - 2)

8 0

2 years ago

Read 2 more answers

Can someone please explain to me how to solve this equation?

Nikolay [14]

Answer:

first of all erase what u have written

Step-by-step explanation:

25-3x-5=2x+16+x
20-6x=16
6x=4
x=2/3

6 0

3 years ago

Which equation represents a line which is parallel to the line y=1/2x + 2

levacccp [35]

Answer:

1/2

Step-by-step explanation:

8 0

3 years ago

17. Let A denote the event that the next request for assistance from a statistical software consultant relates to the SPSS packa

ankoles [38]

Answer:

a. The probability is not equal to 1

b. P (A') = 0.70

c. P ( A U B ) = 0.80

d. P ( A' ∩ B' ) = 0.20

Step-by-step explanation:

a. Because these A and B are disjoint

b. since the probability of A is 0.30 then the probability of A compliment is

P(A compliment ) = 1 - P (A)

P(A compliment ) = 1-0.30

P(A compliment ) = 0.70

c. Since event are disjoint then intersection of A and B is 0, so probability of A U B is;

P ( A U B ) = P (A) + P(B) - P(A∩ B)

P ( A U B ) = 0.30 + 0.50 - 0

P ( A U B ) = 0.80

d. The inetrsection of compilments of A and B are:

by using De Morgan's Law we have,

P ( A' ∩ B' ) = P [(A U B )']

P ( A' ∩ B' ) = 1 - P ( A U B )

P ( A' ∩ B' ) = 1 - 0.80

P ( A' ∩ B' ) = 0.20

5 0

3 years ago

3 2/5 -pound bag of yarn costs $5.25. What is the unit rate? Round to the nearest cent.

vova2212 [387]

Answer:

$1.54 per pound

Step-by-step explanation:

The

$3 \frac{2}{5}$

pound bag of yarn costs $5.25.

To find the unit rate, we divide 5.25 by

$3 \frac{2}{5}$

$\frac{5.25}{3 \frac{2}{5} } = 1.54$

To the nearest tenth,each pound costs $1.54 to the nearest cent.

This is what we call the unit rate. The rate per pound.

5 0

3 years ago