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nirvana33 [79]
3 years ago
14

The following is the list of MAD statistics for each of the models you have estimated from time-series data:

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
4 0

Answer:

b) quadratic trend.

Step-by-step explanation:

The Mean Absolute Deviation MAD is the value which is calculated by taking sum of deviation of the observations from the mean and divides it by the total number of observations. The quadratic trend is analysis of values over time series, the values will not be constant and will either fall or rise. The quadratic trend gives the lowest value for MAD. The low value for MAD is preferable so the best model which should be used for MAD is quadratic trend.

den301095 [7]3 years ago
4 0

Answer:

Step-by-step explanation:

Mean Absolute Deviation is calculated or gotten by firstly by finding the mean of the data set, by finding the addition of the data values, and then by dividing the sum by the number of data values to get the absolute value of the difference between each data value and the mean that is data value – mean. To get the sum of the absolute values of the differences, start by dividing the sum of the absolute values of the differences by the number of data values

In a quadratic trend, the values of a time series sometimes willt rise or it will fall at a rate that is not stable it normally change with time. Thereby , making the line on the trend not to be straight.

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Kaylee and Olivia go to the movie theater and purchase refreshments for their friends.
KatRina [158]

The price of one bag of popcorn is $3.75

Step-by-step explanation:

Let,

x represent the cost of a bag of popcorn

y represent the cost of a drink.

According to given statement;

4x+12y=30      Eqn 1

x+6y=11.25      Eqn 2

Multplying Eqn 2 by 2

2(x+6y=11.25)\\2x+12y=22.50\ \ \ Eqn\ 3

Subtracting Eqn 3 from Eqn 1

(4x+12y)-(2x+12y)=30-22.50\\4x+12y-2x-12y=7.50\\2x=7.50

Dividing both sides by 2

\frac{2x}{2}=\frac{7.50}{2}\\x=3.75

4x+12y=30 and x+6y=11.25 can be used to find the price of one bag of popcorn and the price of one drink.

The price of one bag of popcorn is $3.75

Keywords: linear equation, elimination method

Learn more about elimination method at:

  • brainly.com/question/11821063
  • brainly.com/question/11871074

#LearnwithBrainly

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3 years ago
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Tema [17]

Answer:

Step-by-step explanation:

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Monica [59]
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These are two similar triangles.<br> What does x equal?
tangare [24]

Answer:

112

Step-by-step explanation:

So, we know that a triangle's sides must add up to have a sum of 180. If you add up your given lengths and you should get 47, not including x. Then if you look at the left side/the one without a given length and it should be identical to the 21, so you know that side is 21. So now add 21 to 47, you should get 68. Finally, you subtract 68 from 180 like this: 180-68, and it should equal 112. So you're answer is 112.

3 0
2 years ago
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