Linear Domain and Range

Front

What is the definition of 'domain' in a relation?

Back

The set of all the inputs (or x-values) of a relation.

Front

What is the definition of 'range' in a relation?

Back

The set of all the outputs (or y-values) of a relation.

Front

If r=0, what does it indicate about the correlation?

Back

There is no correlation.

Front

What does r = -0.3 indicate about the correlation strength?

Back

It is considered to have a weak negative correlation.

Front

What is the domain of the function f(x) = 1/x?

Back

x ≠ 0 (all real numbers except 0).

Front

What is the range of the function f(x) = x^2?

Back

y ≥ 0 (all non-negative real numbers).

Front

If a function has a domain of x > 0, what does this mean?

Back

The function is defined for all positive real numbers.

Front

What is a strong positive correlation?

Back

A correlation where r is close to +1, indicating a strong relationship between variables.

Front

What is a strong negative correlation?

Back

A correlation where r is close to -1, indicating a strong inverse relationship between variables.

Front

What does it mean if a correlation coefficient (r) is between -0.3 and 0.3?

Back

It indicates a weak correlation.