Scatterplots and Lines of Best Fit
Flashcard
•
Mathematics
•
8th Grade
•
Practice Problem
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scatterplot?
Back
A scatterplot is a graphical representation of two variables, where each point represents an observation in the dataset, allowing for the visualization of relationships between the variables.
2.
FLASHCARD QUESTION
Front
What does a positive association in a scatterplot indicate?
Back
A positive association indicates that as one variable increases, the other variable also tends to increase.
3.
FLASHCARD QUESTION
Front
What is a line of best fit?
Back
A line of best fit is a straight line that best represents the data on a scatterplot, showing the general direction of the data points.
4.
FLASHCARD QUESTION
Front
How do you determine the slope of a line in a scatterplot?
Back
The slope of a line in a scatterplot is determined by the change in the y-values divided by the change in the x-values (rise over run).
5.
FLASHCARD QUESTION
Front
What does the slope of a line represent in a scatterplot?
Back
The slope represents the rate of change between the two variables; a positive slope indicates a positive relationship, while a negative slope indicates an inverse relationship.
6.
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 zero; it represents the point where the line crosses the y-axis.
7.
FLASHCARD QUESTION
Front
How can you find the equation of a trend line given the slope and y-intercept?
Back
The equation of a trend line can be found using the formula y = mx + b, where m is the slope and b is the y-intercept.
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