Chapter 4 Vocabulary Flashcards
best-fit line
the line that most accurately approximates data in a scatter plo
bivariate data
data with two variables
correlation coefficient
a value that shows how close data points are to a line
inverse function
a function that can create ordered pairs of an inverse relation
inverse relation
a set of ordered pairs found by switching the x- and y- coordinates of each ordered pair in a relation
line of fit
a line that describes the trend of data in a scatter plot
linear extrapolation
to use a linear equation to predict values that are outside the range of the data ( outliers? )
linear interpolation
to use a linear equation to predict values that are in the range of data
linear regression
a way to find a precise line of fit for a data set
median-fit line
a type of best-fit line that is found by using the medians of the two coordinates of a data point
parallel lines
lines in the same area that will never intersect, and will either have the same slopes or are vertical lines
perpendicular lines
lines that form a right angle when they intersect
point slope form
the equation “y-y1=m(x-x1)” where m is the slope and x1 and y1 are the coordinates of a data point on a non-vertical line
rate of change
how a quantity is changing due to the fact that another quantity is changing at the same time
residual
the difference between the actual y-value and the predicted y-value on a regression line
