Unit 12-15 Review

Front

What is a parallelogram?

Back

A parallelogram is a four-sided figure (quadrilateral) with opposite sides that are parallel and equal in length.

Front

What condition must be met for ABCD to be a parallelogram?

Back

The opposite angles must be equal, and the opposite sides must be equal and parallel.

Front

If the diameter of a circle is 32, what is the area?

Back

The area is 804 (Area = π * r², where r = diameter/2 = 16).

Front

What is the formula for the area of a circle?

Back

Area = π * r², where r is the radius.

Front

What does 'no correlation' mean in statistics?

Back

No correlation means there is no relationship between two variables; changes in one do not affect the other.

Front

What is a histogram?

Back

A histogram is a graphical representation of the distribution of numerical data, showing the frequency of data points within certain ranges.

Front

What does 'skewed right' mean in a histogram?

Back

A histogram is skewed right when most data points are concentrated on the left, with a tail extending to the right.

Front

What is the value of x that makes ABCD a parallelogram if one pair of opposite angles is 7 degrees?

Back

x = 7.

Front

What is the definition of correlation in statistics?

Back

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

Front

What is the difference between positive and negative correlation?

Back

Positive correlation means that as one variable increases, the other also increases. Negative correlation means that as one variable increases, the other decreases.