Question: One way to interpret a reliability coefficient (often an r value) is as the proportion of variance in X scores that is stable across occasions

One way to interpret a reliability coefficient (often an r value) is as the proportion of variance in X scores that is stable across occasions of measurement. Why do we interpret r (rather than r2) as the proportion of variance in X scores that is due to T, a component of the score that is stable across occasions of measurement? (See Figure 19.3.)

Step by Step Solution

★★★★★

3.28 Rating (160 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

Here is Figure 193 The observed correlation or reliability coefficient betwee... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

597-M-S-L-R (4965).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

In Chapter 15 (p. 531), we presented an example showing the general relationship among the number of churches, the number of serious crimes, and the population for a set of cities. At that time, we...

(a) Explain conceptually why the proportion of variance accounted for equals 1.0 with a perfect correlation. (b) Why should you expect most relationships to account for only about 9% to 25% of the...

(a) In question 16 what advanced statistical procedures can Poindexter employ to improve his predictions about test errors even more? (b) Say that the resulting correlation coefficient is .67. Using...

PSYC 421 ITEM DEVELOPMENT AND Student Name: ANALYSIS WORKSHEET Section: PSYC421- LaTarsha Jones D02 PART 1: Writing Multiple Choice Test Items (Cohen et al., 2013, pg. 252) Develop one multiple...

respond question 1 (a,b,c,d) c.testing environment d. test administrator Here is information from the book Objective 2 Identify those factors that influence reliability and objectivity for...

Assessment & Evaluation in Higher Education Vol. 29, No. 1, February 2004 Academic procrastination and statistics anxiety Anthony JOnwuegbuzieDepartment of Educational Measurement and Research,...

413-432_CH18_Nachmias.qxd 1/17/07 3:47 PM Page 413 Chapter Index Construction and Scaling Methods INDEX CONSTRUCTION The Purpose of the Index The Sources of the Data The Base of Comparison Methods of...

Assessment & Evaluation in Higher Education Vol. 29, No. 1, February 2004 Academic procrastination and statistics anxiety Anthony JOnwuegbuzieDepartment of Educational Measurement and Research,...

Card, D., Krueger, A.B. (1994). Minimum wages and employment: a case study of the fast-food industry in New Jersey and Pennsylvania. American Economic Review, 84(4), 772-93. Once you have read your...

I need to see the SPSS output. You need to have all z-scores, all charts, all descriptives data from SPSS, everything you used to answer the questions. I am sending you what the previous tutor sent...

Reality recognizes that there is risk associated with each estimated number. After careful study, the firm estimates the probabilistic behaviours are best incorporated by the following: Investment...

Does the performance of kinross gold cooperation affect the performance S&P/TSX Composite index? Explain why or why not using this graph in brief Kinross Gold Corporation (K.TO) Toronto - Toronto...

Which of the following fiscal policy combinations would be most likely to slowly increase real GDP without putting tremendous upward pressure on the price level? (A) Increase government spending with...

In 2000, Ryan Corp. had the following income: Dividends from corporation less than 30% $300,000 1.000 Ryan had no portfolio indebtedness. In Ryan's 2000 table income, what amount should be included...

The director of marketing at Reeves Wholesale Products is studying monthly sales. Three independent variables were selected as estimators of sales: regional population, per capita income, and...

Thompson Photo Works purchased several new, highly sophisticated processing machines. The production department needed some guidance with respect to qualifications needed by an operator. Is age a...

A consulting group was hired by the Human Resources Department at General Mills, Inc. to survey company employees regarding their degree of satisfaction with their quality of life. A special index,...

Last spring, one of my very close friends graduated with an MBA. She interviewed with many companies during her last semester at school. However, there was no job. After graduating, she decided to...

COST OF PREFERRED STOCK Torch Industries can issue perpetual preferred stock at a price of $50.50 a share. The stock would pay a constant annual dividend of $7.00 a share. What is the company's cost...

True or false. Under the fixed time period model, the order quantity is fixed and an assessment whether to order is made at a fixed time period. (3 points) True False True or false. A purchase...