-Anyone wanna help a sister out??-

Mathematics

2 answers:

GalinKa [24]3 years ago

5 0

The answer would be A because a correlation coefficient is only $-1 \leq r \leq 1$

Scrat [10]3 years ago

3 0

Answer:

Option A - The researcher made an error because −1 ≤ r ≤ 1.

Step-by-step explanation:

Given : A researcher is trying to find out if there is a correlation between the U.S. economy and the number of hours spent on social media. The researcher determines that the correlation coefficient is r = 1.26.

To find : What does this value mean?

Solution :

By definition of correlation coefficient,

The correlation coefficient r measures the strength and direction of a linear relationship between two variables on a scatter plot.

The value of r is always between +1 and –1 i.e, $-1\leq r\leq 1$

According to researcher,

The correlation coefficient is r = 1.26 >1

So, From the options it means

The researcher made an error because −1 ≤ r ≤ 1.

Therefore, Option A is correct.

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