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3 years ago

Which of the following r-values represents the strongest correlation?

Mathematics

2 answers:

borishaifa [10]3 years ago

7 0

The correct answer is B

earnstyle [38]3 years ago

5 0

Answer:

Step-by-step explanation:

Solution:-

- Correlation defines the relationship between two variables.

- The correlation coefficient (r) defines the strength/intensity as to how strong or weak the correlation is between the variables under consideration. The sign either ( + or - ) defines the nature of relationship between variables.

+ : positive relationship. ( if one increases the other variable also increases )

- : Negative relationship. ( if one increases the other variable decreases )

- The range of the correlation coefficient (r) is:

-1 < r < 1

Where, 1 : Strongest positive relationship

-1 : Strongest negative relationship

0 : No relationship.

- So the strongest relationship in positive domain only is given by the largest value of (r). In this case it is r = 0.92.

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Step-by-step explanation:

Given as :

During two years, the population of birds of an island became 7 times more than before.

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Let The percentage increase in second year = $r_2$ = r%

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The increase population of bird = initial population of bird × (1+ $\dfrac{r_1}{100}$ ) × (1+ $\dfrac{r_2}{100}$ )

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Hence The percentage increase in bird population in the second years is 4% . Answer

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3 years ago