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nikitadnepr [17]
3 years ago
7

What is the mean absolute deviation of 25,24,25,23,20,18

Mathematics
1 answer:
vovikov84 [41]3 years ago
4 0

The mean absolute deviation is the mean of the absolute values of the differences of the numbers from their mean. It is convenient to let a spreadsheet or calculator do the tedious math. Here it is by hand:

Total of given values: 135

Mean of given values: 135/6 = 22.5

Deviations of given values from the mean:

... {2.5, 1.5, 2.5, 0.5, -2.5, -4.5}

Absolute values of deviations from the mean:

... {2.5, 1.5, 2.5, 0.5, 2.5, 4.5}

Total of those: 14

Mean absolute deviation: 14/6 = 2 1/3.

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What 2/5×3/7 but, once you get an answer make sure you simplified​
vagabundo [1.1K]

Answer:

6/35

Step-by-step explanation:

\frac{2}{5} *\frac{3}{7} =\frac{2*3}{5*7} =\frac{6}{35}

3 0
2 years ago
3. Sam and Tim each have savings accounts. Every month they each put in some of their
Setler [38]

Answer:

y = 30x +50 --- Sam

y = 20x +80 --- Tim

Step-by-step explanation:

Given

Sam                         Tim

х  --- f(x) ---------------  g(x)

1  --- 80   --------------- 100

2  --- 110  --------------- 120

3  --- 140 --------------- 140

4 --- 170 -------------- 160

Required

Determine the y value

y value implies the equation of the table

Calculating the equation of Sam

First, we need to take any corresponding values of x and y

(x_1,y_1) = (1,80)

(x_2,y_2) = (4,170)

Next, we calculate the slope (m)

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{170 - 80}{4 - 1}

m = \frac{90}{3}

m = 30

Next, we calculate the line equation using:

y - y_1=m(x-x_1)

y - 80 = 30(x - 1)

y - 80 = 30x - 30

Make y the subject

y = 30x - 30 + 80

y = 30x +50

Calculating the equation of Tim

First, we need to take any corresponding values of x and y

(x_1,y_1) = (1,100)

(x_2,y_2) = (4,160)

Next, we calculate the slope (m)

m = \frac{y_2 - y_1}{x_2 - x_1}

m = \frac{160 - 100}{4 - 1}

m = \frac{60}{3}

m = 20

Next, we calculate the line equation using:

y - y_1=m(x-x_1)

y - 100 = 20(x - 1)

y - 100 = 20x - 20

Make y the subject

y = 20x - 20+100

y = 20x +80

7 0
3 years ago
Jessica earns $800 each month working a part-time job. She wants to save a total of $2,400 for college over a one-year period. W
Stolb23 [73]

Answer:

25% should go

Step-by-step explanation:

If she wants to save $2,400;

Then in a month, she should save 2400/12 = 200

So now we need the amount of her monthly earnings will this savings be

That will be;

200/800 * 100%

= 1/4 * 100% = 25%

8 0
3 years ago
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the answer is (1,2).

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All the interior angles are right angles
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