which scatterplot shows a strong association between two variables even though the correlation is probably near zero?
1 answer:
The scatterplot that shows a strong association between two variables even if the correlation is near zero is graph C.
<h3>What is zero correlation?</h3>
Correlation is a measure that is used in statistics to measure the linear relationship that exists between two variables.
Zero correlation is when there is no linear relationship between the variables been studied. When it is shown on a graph, zero correlation would have no clear linear trend either positive or negative. A linear trend is roughly a straight line. A linear trend is positive if it slopes upward and negative if it slopes downward.
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Answer:
Step-by-step explanation:
we know that
A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form or
In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin
we have the point (-30,18)
so
x=-30, y=18
Find the value of k
substitute
Simplify
Divide by 6 both numerator and denominator
We have .
To find inverse function we substitute x with
and vice-versa to get
Now solve for . Note that I will use
instead.
So we find that .
Hope this helps.