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2 answers:
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Answer:
0.451751 is the proportion of variability of Gini Coefficient explained by our least squares lines
Step-by-step explanation:
Given
To predict: Gini by year
Required
Interpret the R squared
In statistics, r squared measures the extent to which the variance of one variable explains the variance of the other variable.
In this question, the variable to predict is Gini:
From the list of options, (c) is correct
Answer:
Step-by-step explanation:
First we need to rewrite 3x-5y=8 in slope-intercept form.
The slope of this line is
The line perpendicular to this line will have a slope that is the negative reciprocal of 3/5, which is
This line passes through (3,7).
The equation is given by:
We substitute the point and slope to get:
We multiply through by 3 to get:
Expand to obtain: