Final Exam Review U7-U8

Front

What is an outlier in a data set?

Back

An outlier is a data point that differs significantly from other observations in a dataset. It can skew the results and affect statistical analyses.

Front

How do you predict values using a linear equation?

Back

To predict values using a linear equation, substitute the given value into the equation and solve for the unknown variable.

Front

What is the distance formula?

Back

The distance formula is used to calculate the distance between two points in a coordinate plane: d = √((x2 - x1)² + (y2 - y1)²).

Front

How do you find the midpoint of a line segment?

Back

The midpoint of a line segment with endpoints (x1, y1) and (x2, y2) is found using the formula: ((x1 + x2)/2, (y1 + y2)/2).

Front

What is the slope of parallel lines?

Back

Parallel lines have the same slope, meaning they rise and run at the same rate.

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables, with points representing data values.

Front

What does the equation of a trend line represent?

Back

The equation of a trend line represents the relationship between the independent variable (x) and the dependent variable (y) in a scatter plot.

Front

How do you identify an outlier in a set of numbers?

Back

An outlier can be identified by looking for values that are significantly higher or lower than the rest of the data points.

Front

What is the formula for calculating the slope of a line?

Back

The slope (m) of a line is calculated using the formula: m = (y2 - y1) / (x2 - x1).

Front

What does it mean for two lines to be perpendicular?

Back

Two lines are perpendicular if their slopes are opposite reciprocals of each other.