Algebra 1 Practice Checkpoint 1

Front

What is the difference between correlation and causation?

Back

Correlation indicates a relationship between two variables, but it does not imply that one variable causes the other.

Front

Back

The solutions are x = -2 and x = 7.

Front

What units are appropriate for measuring small objects like a pencil's eraser?

Back

Millimeters are the most appropriate units for measuring the diameter of a pencil's eraser.

Front

Back

r(6) = 108.

Front

If a principal estimates 340 participants but 390 actually participate, how much did they underestimate?

Back

The principal underestimated participation by approximately 12.82%.

Front

Define correlation in statistics.

Back

Correlation is a statistical measure that describes the extent to which two variables change together.

Front

What does it mean if two variables are positively correlated?

Back

If two variables are positively correlated, as one variable increases, the other variable also tends to increase.

Front

What does it mean if two variables are negatively correlated?

Back

If two variables are negatively correlated, as one variable increases, the other variable tends to decrease.

Front

What is an absolute value equation?

Back

An absolute value equation is an equation that contains an absolute value expression, which represents the distance of a number from zero on the number line.

Front

How do you solve an absolute value equation?

Back

To solve an absolute value equation, set up two separate equations: one for the positive case and one for the negative case.