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nikklg [1K]
3 years ago
15

Can someone please explain this and Answer it

Mathematics
2 answers:
elena-14-01-66 [18.8K]3 years ago
6 0
71
first, subtract 1 from 10 which is 9
then multiply 9 and 7 which gives you 63
now, add 63 and 8
that brings you to your answer, 71 :)
Gwar [14]3 years ago
4 0

Answer:

71

Step-by-step explanation:

pemdas -> parentheses, exponents, multiplication, division, addition, and subtraction

you have to do those in order

first parentheses so (10-1) = (9)

(you keep the parentheses)

then no exponents so multiplication

7*(9) = 63

lastly addition

8+63

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The correlation coefficient between two quantitative variables is approximately 0.6. What does the value of this correlation coe
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Answer:

The model does not fits the data well.      

Step-by-step explanation:

Correlation:

  • Correlation is a technique that help us to find or define a relationship between two variables.
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  • A negative correlation means with increase in one quantity the other quantity decreases.

R-square, R^2

  • The quantity R-squared is an indicator of the predictive power of a model.
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  • It shows how well the model fits the data.
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R^2 = \text{(Correlation coefficient)}^2= (0.6)^2 = 0.36 = 36\%

Therefore, only 36% of the variations in the dependent variable is explained by the independent variable in the model which means more than 50% of variation cannot still be explained in the dependent variable.

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