Scatter Plots and Trends Lines_AO

Flashcard
•
Mathematics
•
8th - 10th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a scatter plot?
Back
A scatter plot is a graphical representation of two variables where each point represents an observation. It helps to visualize the relationship between the variables.
2.
FLASHCARD QUESTION
Front
What does a trend line represent in a scatter plot?
Back
A trend line is a straight line that best represents the data points in a scatter plot, indicating the general direction of the relationship between the variables.
3.
FLASHCARD QUESTION
Front
What does a positive correlation indicate in a scatter plot?
Back
A positive correlation indicates that as one variable increases, the other variable also tends to increase.
4.
FLASHCARD QUESTION
Front
What does a negative correlation indicate in a scatter plot?
Back
A negative correlation indicates that as one variable increases, the other variable tends to decrease.
5.
FLASHCARD QUESTION
Front
How do you interpret the slope of a trend line?
Back
The slope of a trend line indicates the rate of change between the two variables. A positive slope means an increase in one variable leads to an increase in the other, while a negative slope indicates the opposite.
6.
FLASHCARD QUESTION
Front
What is the formula for calculating the slope of a line?
Back
The formula for calculating the slope (m) is m = (y2 - y1) / (x2 - x1), where (x1, y1) and (x2, y2) are two points on the line.
7.
FLASHCARD QUESTION
Front
What does it mean if the slope of a trend line is zero?
Back
If the slope of a trend line is zero, it means there is no correlation between the variables; changes in one variable do not affect the other.
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