Vocabulary
A graph that shows pairs of numerical data.
What is a scatter plot?
What is a positive association?
If points move upward from left to right, the association is this.
What is about the same number?
A best-fit line should have about this many points above and below it.
What are predictions?
Once a line is fit to data, it can be used to make these.
What is an association?
The tendency of data to increase or decrease together.
What is a negative association?
If points move downward from left to right, the association is this.
What is a good fit?
A line that follows the trend of the data well.
What is interpolation
Estimating a value inside the range of the data.
What is an outlier?
A point that is far away from the overall pattern of data.
What is no association?
When there is no clear pattern in the data.
A best-fit line does not need to pass through every ____.
What is a point?
What is extrapolation?
Estimating a value outside the range of the data.
What is a line of best fit?
A line drawn to show the overall trend in a scatter plot.
What is a scatter plot?
The graph used in Lesson 13 to display data before fitting a line
What is a poor fit?
A line that is too steep or too flat is an example of this.
If the line goes through (5,10), the predicted y-value when x = 5 is __
What is 10?
What is a prediction?
Using a graph to estimate a value that is not given.
The closer points are to a line, the ____ the fit
What is better?
What is showing the overall trend of the data?
The purpose of a best-fit line.