Using a calculator, the correlation coefficient is of 0.7649. Since the correlation is greater than 0.6, there is strong correlation.
<h3>What is a correlation coefficient?</h3>
- It is an index that measures correlation between two variables, assuming values between -1 and 1.
- If it is positive, the relation is positive, that is, they are direct proportional. If it is negative, they are inverse proportional.
- If the absolute value of the correlation coefficient is greater than 0.6, the relationship is strong.
Using a calculator, we insert the points (x,y) to find the coefficient. In this problem, the points are given as follows:
(1, 5), (4, 8), (8, 3), (13, 10), (19, 13)
The coefficient is of 0.7649. Since the correlation is greater than 0.6, there is strong correlation.
More can be learned about correlation coefficients at brainly.com/question/25815006
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The answer would be 25.65
Answer: s ≤ 60
Step-by-step explanation:
The common inequality signs include:
> which is greater than
< which is less than
= which is equal to
≥ which is greater than or equal to
≤ which is less than or equal to
Since the speed limit is 60 miles per hour, it simply means that the speed limit is less than or equal to 60 miles per hour. This will be:
s ≤ 60
The above means the speed is less than or equal to 60 miles per hour
D: {1,2,3,4}
R: {1,2,3,4}
Function? Yes, the relation is a function.
<span>In order to figure out when the investment will double, we only need to look at the interest rate. The equation to use to find when the investment has doubled is years = ln(2)/ln(1+interest rate), where “ln” is the natural log, and the interest rate is 0.065.
Years = ln(2) / ln(1.065)
Years = 11.007 = 11.0 years
Alternatively, If we want to approximate with the “rule of 72”, (which is a faster, slightly less approximate method), we just divide 72 by the interest rate percentage:
Years = 72/6.5 = 11.077 = 11.1 years</span>