Unit 3 Fix It

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•
Mathematics
•
8th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a linear regression equation?
Back
A linear regression equation is a mathematical formula that describes the relationship between two variables, typically in the form y = mx + b, where m is the slope and b is the y-intercept.
2.
FLASHCARD QUESTION
Front
How do you predict values using a linear regression equation?
Back
To predict values, substitute the known value of x into the linear regression equation and solve for y.
3.
FLASHCARD QUESTION
Front
What does the slope in a linear regression equation represent?
Back
The slope represents the rate of change of the dependent variable (y) with respect to the independent variable (x).
4.
FLASHCARD QUESTION
Front
What is the y-intercept in a linear regression equation?
Back
The y-intercept is the value of y when x is 0, indicating where the line crosses the y-axis.
5.
FLASHCARD QUESTION
Front
How can you use a linear equation to make predictions?
Back
By substituting the value of the independent variable into the equation, you can calculate the expected value of the dependent variable.
6.
FLASHCARD QUESTION
Front
What is the significance of the equation y = 3.14x + 3.52 in predicting chess match wins?
Back
This equation indicates that for every additional hour of practice (x), the team is expected to win approximately 3.14 more matches, plus a base of 3.52 matches.
7.
FLASHCARD QUESTION
Front
If a team practices for 4.5 hours, how do you calculate the expected wins using the equation y = 3.14x + 3.52?
Back
Substitute x = 4.5 into the equation: y = 3.14(4.5) + 3.52 = about 18.
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