The population of Virginia is 30% less than the population of Georgia. If
1 answer:
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Original Income = 15,000
New income = 20,000
The percentage Increase in the income can be calculated as:
%
The change in income = 20000 - 15000 = 5000
Using the values, we get:
%
=
%
This means, Pats income increased by 33.33% in a period of ten years
New income = 20,000
The percentage Increase in the income can be calculated as:
The change in income = 20000 - 15000 = 5000
Using the values, we get:
=
This means, Pats income increased by 33.33% in a period of ten years
Solution
Find the y-intercept for following equation:
Using the slope equation formular:
The value of y when x = 0
Hence the answer is - 1
We are asked to determine the correlation factor "r" of the given table. To do that we will first label the column for "Quality" as "x" and the column for "Easiness" as "y". Like this:
Now, we create another column with the product of "x" and "y". Like this:
Now, we will add another column with the squares of the values of "x". Like this:
Now, we add another column with the squares of the values of "y":
Now, we sum the values on each of the columns:
Now, to get the correlation factor we use the following formula:
Where:
Now we substitute the values, we get:
Solving the operations:
Therefore, the correlation factor is 0.858. If the correlation factor approaches the values of +1, this means that there is a strong linear correlation between the variables "x" and "y" and this correlation tends to be with a positive slope.
