Vocab
Relationships/Correlations
Lines of Fit
Interpreting Lines of Fit
Misc
100
A graph that shows a relationship between two things using dots is a ...
Scatter plot
100
Which relationship is modeled by the scatter plot
Negative Linear Relationship
100
What form must lines of fit must be written in?
Slope-intercept form or y=mx +b
100
What two things do we interpret in a line of fit?
slope and y-intercept
100
Which variable is used to represent slope
m
200
An empty space between points in a scatter plot
Gap
200
As x increases, y increases is called a...
Positive Linear Relationship
200
Is the line a good line of fit for the data?
No, there are too many points below the line of fit.
200
Interpret the y-intercept of the scatter plot
At zero seconds, the position is zero.
200
San Elijo Middle School is
Incredible
300
A close grouping of points on a scatter plot
Cluster
300
This relationships shows a curve
Nonlinear relationship
300
Why is this a good line of fit?
It passes through most points, shows a trend, linear, etc
300
Interpret means...
to explain the meaning of something
300
Our class is ...
.... the best
400
Define an outlier
A data point that doesn't follow the trend, or is far away from most of the data.
400
What relationship is modeled by the sentence...
"As a biker’s speed increases, their time to get to the finish line decreases."
Negative Linear Relationship
400
What is the line of fit for the data?
y=9/4x + 0 or y=9/4x
400
Interpret the slope for the line of fit
The temperature of the tank drops 2 degrees every hour.
400
What is the name of this transformation?
Translation
500
Define a line of fit
A linear line that shows where points are trending. It passes through most points.
500
Which relationship is modeled by the sentence...
"Quarters played in a basketball game vs. total points scored."
Positive Linear
500
What is the criteria to make a good line of fit (4 things)
1. Must be linear
2. Passes through most of the points
3. Is centered amongst the data
4. Must be in slope intercept form
500
How do you identify the y intercept
y=mx+b
the constant value in the equation y=mx+b
slope is b