Review - Fall Semester Exam 2023

Front

What is the line of best fit?

Back

The line of best fit is a straight line that best represents the data on a scatter plot. It is used in regression analysis to predict values.

Front

What is the domain of a function?

Back

The domain of a function is the set of all possible input values (x-values) for which the function is defined.

Front

Solve the equation: 9 + d = 16

Back

d = 7

Front

What does a correlation coefficient of r = -0.17 indicate?

Back

A correlation coefficient of r = -0.17 indicates a weak negative correlation between the two variables.

Front

What type of association does a negative correlation indicate?

Back

A negative correlation indicates that as one variable increases, the other variable tends to decrease.

Front

Define a linear equation.

Back

A linear equation is an equation that makes a straight line when graphed. It can be written in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the rise over run (change in y over change in x).

Front

What is a scatter plot?

Back

A scatter plot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.

Front

What does it mean if a graph has no correlation?

Back

If a graph has no correlation, it means there is no discernible relationship between the two variables being plotted.

Front

How do you find the y-intercept of a linear equation?

Back

The y-intercept of a linear equation is found by setting x = 0 and solving for y.