1. Why is it dangerous to extrapolate outside the experimental region? 2. Discuss how the least...
1. Why is it dangerous to extrapolate outside the experimental region? 2. Discuss how the least squares line is used to predict y on the basis of x.
Homework Answers
1.If you extrapolate without other supporting evidence you also violating correlation does not imply causation;
2.)Given a collection of pairs
(x,y) of numbers (in which not all the x-values are the same),
there is a line yˆ=βˆ1x+βˆ0 that best fits the data in the sense of
minimizing the sum of the squared errors. It is called the least
squares regression line.
Add Answer to:
1. Why is it dangerous to extrapolate outside the experimental
region? 2. Discuss how the least...
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are 2 and 3 correct
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the answer is y-7/12=-1/11(x-7/12) but I dont know why
5) Let X and Y have joint probability density function Graph the support of the joint random variable (X, Y). Find the Least squares regression line and graph it with the support
5) Let X and Y have joint probability density function Graph the support of the joint random variable (X, Y). Find the Least squares regression line and graph it with the support
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Lesson If you have been outside on a cold windy day, you have experien emperature that our bodies feel when the wind blows on our skin on a com wind chill, the temperature seems to our bod dangerous. Meteorologists predict the temp outside. For example, people need to know the displays wind chills for various windsds when the outside temperature is 15 ve experienced wind chill Windchill is the our skin on a cold day. When we experience to our...
Objective 2: Interpret the Slope and the y-Intercept of the Least-Squares Regression Line 4.2 Least-Squares Regression 4.2.13 0 of 1 Point Question Help A student at a junior college conducted a survey of 20 randomly selected full-time students to determine the relation between the number of hours of video game playing each week, x, and grade-point average, y. She found that a linear relation exists between the two variables. The least-squares regression line that describes this relation is y0.0575x +...
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are 2 and 3 correct
2) Find the equation of the least squares line.The paired data below consist of the costs of advertising 2) (in thousands of dollars) and the number of products sold (in thousands). Cost (x) 92 3 4 2 5 9 10 Number (y) 85 52 55 68 67 86 83 73 A) y -26.4-1.42x C) y 55.8+2.79x B) y 55.8-2.79x D) y 26.4 1.42x 3) Use the equation of the least squares line obtained in the...
the answer is y-7/12=-1/11(x-7/12) but I dont know why
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