Scatterplots-Correlation & Best Fit Lines
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
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1.
FLASHCARD QUESTION
Front
What is a scatterplot?
Back
A scatterplot is a graph that shows the relationship between two quantitative variables by displaying data points on a two-dimensional axis.
2.
FLASHCARD QUESTION
Front
What does a trend line represent in a scatterplot?
Back
A trend line, or line of best fit, represents the general direction that a group of points seem to be heading, helping to predict values.
3.
FLASHCARD QUESTION
Front
How do you determine the line of best fit?
Back
The line of best fit is determined by minimizing the distance between the line and all the data points, often using the least squares method.
4.
FLASHCARD QUESTION
Front
What is correlation in the context of scatterplots?
Back
Correlation refers to the strength and direction of a relationship between two variables, which can be positive, negative, or no correlation.
5.
FLASHCARD QUESTION
Front
What does a positive correlation look like on a scatterplot?
Back
A positive correlation appears as an upward slope, where as one variable increases, the other variable also increases.
6.
FLASHCARD QUESTION
Front
What does a negative correlation look like on a scatterplot?
Back
A negative correlation appears as a downward slope, where as one variable increases, the other variable decreases.
7.
FLASHCARD QUESTION
Front
What is no correlation?
Back
No correlation means there is no discernible relationship between the two variables, and the points on the scatterplot are scattered randomly.
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