For the Questions Below, Use the Following Partial Class Definitions

question 10

Multiple Choice

For the questions below, use the following partial class definitions:
public class A1
{
public int x;
private int y;
protected int z;
...
}
public class A2 extends A1
{
protected int a;
private int b;
...
}
public class A3 extends A2
{
private int q;
...
}
-Which of the following is True with respect to A1, A2 and A3?

• A) A1 is a subclass of A2 and A2 is a subclass of A3
• B) A3 is a subclass of A2 and A2 is a subclass of A1
• C) A1 and A2 are both subclasses of A3
• D) A2 and A3 are both subclasses of A1
• E) A1, A2 and A3 are all subclasses of the class A

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Definitions:

Covariance

A measure of the joint variability of two random variables, giving insight into how the variables change together.

Coefficient Of Correlation

A numerical measure that indicates the strength and direction of a linear relationship between two variables, ranging from -1 to 1.

Linear Relationship

A type of correlation where the change in one variable is directly proportional to the change in another variable.

Shape

In statistics, refers to the geometric form of the distribution of a dataset or probability distribution, such as skewness and kurtosis defining its asymmetry and peakedness.