3-2 Mid-Chapter Flashcard A

3-2 Mid-Chapter Flashcard A

Assessment

Flashcard

Mathematics

12th Grade

Hard

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15 questions

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1.

FLASHCARD QUESTION

Front

What does the slope in a regression equation represent?

Back

The slope represents the rate of change of the dependent variable (y) for each unit change in the independent variable (x).

2.

FLASHCARD QUESTION

Front

In the regression equation y-hat=74 + 0.136x, what does the value 74 represent?

Back

The value 74 represents the y-intercept, which is the predicted value of y when x is 0.

3.

FLASHCARD QUESTION

Front

How do you interpret the slope of 0.136 in the context of the regression equation for plane ticket costs?

Back

The slope of 0.136 indicates that for each additional mile flown, the cost of the plane ticket increases by $0.136.

4.

FLASHCARD QUESTION

Front

What is a regression equation used for?

Back

A regression equation is used to predict the value of a dependent variable based on the value(s) of one or more independent variables.

5.

FLASHCARD QUESTION

Front

What is the dependent variable in the regression equation y-hat=74 + 0.136x?

Back

The dependent variable is the cost of the plane ticket (y-hat).

6.

FLASHCARD QUESTION

Front

What is the independent variable in the regression equation y-hat=74 + 0.136x?

Back

The independent variable is the flight distance (x).

7.

FLASHCARD QUESTION

Front

What does it mean if the slope of a regression line is positive?

Back

A positive slope indicates that as the independent variable increases, the dependent variable also increases.

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