Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Regression equation and coefficient of determination.

1. Which of these following statements provides the best guidance for the model building?

a. If the value of r2 increases as more variables are added to the model, the variables should remain in the model, regardless of the magnitude of increase.

b. If the value of the adjusted r2 increases as more variables are added to the model, variables should remain in the model.

c. If the value of r2 increases as more variables are added to the model, variables should not remain in the model, regardless of the magnitude of increase.

d. If the value of the adjusted r2 increases as more variables are added to the model, variables should not remain in the model.

e. None of the statements provide accurate guidance.

2. A air conditioning and heating repair firm conducted a study to determine if the outside temperature could be used to predict the cost of an electric bill for homes during the winter months in Housion. Texas. The resulting regression equation was:

Y = 227.19 - 1.45X,  Where Y = monthly cost, X = outside air temperature

a. If the temperature averaged 48 degrees throughout December, what is the forecasted of December's electric bill?

b. If the temperature averaged 38 degrees throughout January, what is the forecasted cost of January electric bill?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922920

Have any Question? 


Related Questions in Statistics and Probability

Relate the content of this video to the industry segment of

Relate the content of this video to the Industry segment of the external environment by describing which of Porter's Five Competitive Forces is the focus of Outsell Consulting's value proposition? What is the nature of t ...

1 how do mixed expericorr designs differ from other

1. How do mixed/ expericorr designs differ from other experimental designs? 2. Distinguish between an independent variable and a subject variable.

A business student is interested in estimating the 99

A business student is interested in estimating the 99% confidence interval for the proportion of students who bring laptops to campus. He wishes a precise estimate and is willing to draw a large sample that will keep the ...

Given a stable matching of n men and n womena is it

Given a stable matching of n men and n women, (a) Is it possible to find three pairs such that if the matching among them is changed, each man will be matched to a woman whom he prefers, and each woman will be matched to ...

There are 1000 students in a high school among the 1000

There are 1000 students in a high school. Among the 1000 students, 150 students take AP Statistics, and 300 students take AP French. 100 students take both AP courses. Let S be the event that a randomly selected student ...

When researchers set their alpha level at 05 they reject

When researchers set their alpha level at .05, they reject the null hypothesis (and conclude that the independent variable has an effect) only if there is less than a 5% chance that the differences among the means are du ...

A car salesmen claims that a particular make of a car would

A car salesmen claims that a particular make of a car would give a mean mileage of greater than 20mpg. If I ran 10 cars on one gallon of gas each and came up with 10 different results, what statistical formula would I us ...

A consumer psychologist asked to test a claim by a swimming

A consumer psychologist asked to test a claim by a swimming school that its instructors could teach the average seven-year-old to swim across an Olympic-sized pool in less than 2 minutes. The psychologist arranged for ei ...

1 prove that every complete irreflexive and transitive

1. Prove that every complete, irreflexive, and transitive relation is asymmetric: if x ≠ y, then x > y if and only if y x. 2. Prove that the Gale-Shapley algorithm for finding a stable matching satisfies the following pr ...

A random sample of the price of gasoline from 40 gas

A random sample of the price of gasoline from 40 gas stations in a region gives the statistics below. Complete parts a) and b). ybar = $3.79, s = $0.27 a) Find a 95% confidence interval for the mean price of regular gaso ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro