What is a line of best fit?
Line of best fit - scatter plots

Flashcard
•
Mathematics
•
8th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
Back
A line of best fit is a straight line that best represents the data on a scatter plot, showing the trend of the data points.
2.
FLASHCARD QUESTION
Front
How do you determine the equation of a line of best fit?
Back
You can determine the equation by using statistical methods such as linear regression or by visually estimating the line that minimizes the distance to all points.
3.
FLASHCARD QUESTION
Front
What does the slope of a line of best fit represent?
Back
The slope indicates the rate of change between the dependent variable (y) and the independent variable (x). A positive slope means y increases as x increases, while a negative slope means y decreases as x increases.
4.
FLASHCARD QUESTION
Front
What is the y-intercept in the equation of a line?
Back
The y-intercept is the value of y when x is 0, representing where the line crosses the y-axis.
5.
FLASHCARD QUESTION
Front
What is an outlier in a scatter plot?
Back
An outlier is a data point that significantly differs from other observations, often lying far away from the trend of the data.
6.
FLASHCARD QUESTION
Front
How can you identify an outlier in a scatter plot?
Back
An outlier can be identified visually as a point that is distant from the cluster of other points or statistically using methods like the IQR (Interquartile Range) method.
7.
FLASHCARD QUESTION
Front
What is the formula for the slope (m) of a line given two points (x1, y1) and (x2, y2)?
Back
The slope is calculated using the formula: m = (y2 - y1) / (x2 - x1).
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