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zvonat [6]
3 years ago
10

A regression equation is obtained for a collection of paired data. It is found that the total variation is 20.711 , the explaine

d variation is 18.592 , and the unexplained variation is 2.119 . Find the coefficient of determination.
Mathematics
1 answer:
galben [10]3 years ago
8 0

Answer:

0.898

Step-by-step explanation:

The formula for the Coefficient of determination = ratio of explained variation to Total variation

From the above question, we have the following values

Explained variation = 18.592

Total variation = 20.711

The coefficient of determination = 18.592 : 20.711

= 18.592/20.711

= 0.8976872194

Approximately ≈ 0.898

Therefore, the coefficient of determination is 0.898

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siniylev [52]

Answer:

= 21.6216% decrease

Step-by-step explanation:

Calculate percentage change

from V1 = 29.6 to V2 = 23.2

(V2−V1)|V1|×100

=(23.2−29.6)|29.6|×100

=−6.429.6×100

=−0.216216×100

=−21.6216%change

=21.6216%decrease

3 0
2 years ago
12. Fancy goldfish x cost $3 each and
o-na [289]

Answer:

x (Fancy Gold fish) = 3

y (Common goldfish) = 29

Step-by-step explanation:

Fancy goldfish x cost $3 each

common goldfish y cost $1 each

Graph: y  = 20 +  3x (I'm hoping this is the correct line equation, please do leave a comment below if it's not)

Thus, we graph it by subtitude either the x or y values. (Or you can use just X = 1,2,3).

Now, to find how many of each type of goldfish Tasha can buy. We subtitude the line equation by either using x = 3 or y = 1

Using either values to solve the equation, we get:

x = 3

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Hope this helps!

5 0
2 years ago
Read 2 more answers
How do you write 680,705 in expanded form??
atroni [7]

<em>Hello!</em>

<em>The expanded form is:</em>

<em>600,000 + 80,000 + 700 + 5</em>


<em>Toodles~</em>

4 0
3 years ago
(2x^2)^-4 how to solve this problem
Alinara [238K]

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3 0
3 years ago
I need a easy way to do percentage
o-na [289]
It depends on what you are trying to calculate but the most common way I go to find percentage is to multiply by the number in decimal for ie. 50% = .5.

If you are looking for a way to do it quickly in your head I always take find out what 10% is like in the case of 100 it would be 10 so if I want to find 15% I know I can find 10% and if I cut what 10% is in half I will find 5% so likewise if I add what 10%+5% I will end up with 15%. For example, 10% of 100 is 10 half of 10 is 5 and 10+5 equals 15. If you need to find something like 20% or 30% I know that I can find 10% and instead of dividing(cutting it in half) I can multiply by 2 or 3. 10% + 10% =20%

I hope it helps, if you have more questions let me know!
7 0
3 years ago
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