Which of the following is a description of the data with a correlation coefficient of 1? a. no correlation b. perfect positive correlation c. high positive correlation d. perfect negative correlation

A correlation coefficient of 1 or +1 means we have perfect positive correlation. Every point on the scatter plot falls on the same straight line. This straight line has some positive slope. By "positive slope", I mean the line moves upward as you read from left to right. The correlation coefficient r is between -1 and 1 (inclusive). If r = -1, then we have perfect negative correlation. If r is closer to 0, then we have little to no linear correlation at all, which would mean the points are randomly scattered about or they might fall closer to a parabola or some other curve.

Choice B) Perfect postive correlation

step-by-step explanation:

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answer

a,b, and d

explanation

a reflection angle is more than

but less than;

an angle that measures

is a reflex angle.(true)

an angle that measures less than

is acute.(true)

provided we are considering angles greater or equal to zero.

an acute angle lies in the range.

an obtuse angle is less than 180° but more than 90°

an angle that measures 300° is obtuse (false)

an angle that measures 65° is an acute angle.(true)