Completely randomized design, Basic Statistics

Assignment Help:
Ask question #MinimumAgency revenues. An economic consultant was retained by a large employment agency in a metropolitan area to develop a regression model for predicting monthly agency revenues ( y ). She decided that three economic indicators for the area were potentially useful as independent variables, namely, average weekly overtime hours of production workers in manufacturing ( 1 x ), number of job vacancies in manufacturing ( 2 x ), and index of help wanted advertising in newspapers ( 3 x ). Monthly observations on agency revenues and the three independent variables were obtained for the past 25 months. The ANOVA table for the model is as follows:

1479_Determine the subset of variables.png

The consultant decided to screen the independent variables to determine the best set for predicting agency revenues. The regression sums of squares for all possible regression models were found to be as follows:

1358_Determine the subset of variables1.png

(a) Determine the subset of variables that is selected as best by the forward selection procedure using F0* = 4.2 (to-add-variable). Show your steps.

(b) Determine the subset of variables that is selected as best by the backward elimination procedure using F0** = 4.1 (to-delete-variable). Show your steps.

NOTE: ( t0** ) 2 = F0**

(c) Determine the subset of variables that is selected as best by the stepwise regression procedure using F0* = 4.2 (to-add) and F0**
= 4.1 (to-delete). Show your steps.

Related Discussions:- Completely randomized design

Rebate, Refund can be defined as return of a part of a purchase price by a ...

Refund can be defined as return of a part of a purchase price by a seller to a buyer, usually on a purchase of a specified quantity or a value of goods within a specified period.

Descriptive analysis , All Excel output should be copied into a single Word...

All Excel output should be copied into a single Word document where you must enter all of your responses to the questions below. Format the document professionally so it flows well

Define accounting Actuarial basis , A basis used in processing the quantity...

A basis used in processing the quantity of advantages to be created regularly to a finance or consideration so that the complete advantages plus the complicated income thereon will

F2 test distributed populations, What is F2 Test, These tests were based o...

What is F2 Test, These tests were based on the assumption that the samples were drawn from normally distributed populations, or more accurately that the sample means were normally

Probabilities, What is the probability of selecting exactly one red and one...

What is the probability of selecting exactly one red and one blue fish (Total red is .479 and total blue is .521 and total of both is 1.000) I cannot figure out the formula or how

Calculate stress in the string, question.. A prevent of huge m1 and bodywe...

question.. A prevent of huge m1 and bodyweight w1 = m1g goes on a stage frictionless exterior. It is attached by a gentle versatile string moving past over a little frictionless l

How to calculate midrange in statistics?, Midrange The midrange is the ...

Midrange The midrange is the measure of the center that is the value midway between the highest and the lowest values in the original data set. It is found by adding the highes

Probability, if you tossed coin 6 times what is probability of getting more...

if you tossed coin 6 times what is probability of getting more than 3 head?

Income tax expense, I''m not sure how to calculate the income tax expense.

I''m not sure how to calculate the income tax expense.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd