Scatterplots and Lines of Best Fit

Flashcard
•
Mathematics
•
8th Grade
•
Hard
+10
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15 questions
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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 plane.
Tags
CCSS.8.SP.A.1
2.
FLASHCARD QUESTION
Front
What does the slope of a line represent in a scatterplot?
Back
The slope of a line in a scatterplot represents the rate of change between the two variables. A positive slope indicates a direct relationship, while a negative slope indicates an inverse relationship.
Tags
CCSS.8.EE.B.5
3.
FLASHCARD QUESTION
Front
How do you calculate the slope from two points (x1, y1) and (x2, y2)?
Back
The slope (m) is calculated using the formula: m = (y2 - y1) / (x2 - x1).
Tags
CCSS.8.EE.B.5
4.
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.
Tags
CCSS.8.EE.B.5
5.
FLASHCARD QUESTION
Front
How can you use a line of best fit to make predictions?
Back
You can use the line of best fit to estimate the value of one variable based on the value of another by finding the corresponding point on the line.
6.
FLASHCARD QUESTION
Front
What is the equation of a line in slope-intercept form?
Back
The equation of a line in slope-intercept form is given by y = mx + b, where m is the slope and b is the y-intercept.
Tags
CCSS.8.EE.B.6
CCSS.8.F.A.3
7.
FLASHCARD QUESTION
Front
What does the y-intercept represent in a scatterplot?
Back
The y-intercept represents the value of the dependent variable when the independent variable is zero.
Tags
CCSS.HSF.LE.B.5
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