Consider the Following Scatterplot of Two Variables X and Y

question 29

Multiple Choice

Consider the following scatterplot of two variables x and y. We may conclude:

• A)the correlation between x and y must be close to 1, because there is a nearly perfect relation between them.
• B)the correlation between x and y must be close to -1, because there is a nearly perfect relation between them but it is not a straight line relation.
• C)the correlation between x and y is close to 0 because, although there is a strong relationship between these variables, it isn't a linear relationship.
• D)the correlation between x and y could be any number between -1 and +1; we can say nothing more without knowing the actual values.

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Definitions:

Identical Trials

Experiments or tests in which the conditions and parameters are kept the same to ensure uniform results.

Dependent Trials

Experiments or trials in which the outcome or result of one affects the outcome or result of another.

Discrete Probability

The probability of occurrence of outcomes in a dataset that consists of distinct, separate values.

Required Condition

A necessary state or circumstance that must be met for something to occur or be considered true.