Purpose

$$ Develop expertise in using metrics about the effectiveness of specific selection tools

$$ Practice computing and interpreting key metrics that serve and inform the process of staffing

When constructing a new hiring system, an organization may wish to test out various options before finalizing that system. Specifically, HR professionals will find it beneficial to explore various hypothetical scenarios with real applicant data to get a better $$feel$$ for how effective their proposed system will be$.$ To do so$,$ an organization may choose to conduct reliability and validity studies wherein selection tool data is gathered from applicants who are subsequently hired and whose performance is then measured after a period of time on the job. These data can allow one to speculate on how a given staffing system would function with future applicant pools.

On the course webpage under Content and Week $4,$ you will find a data file in Excel format that contains the type of test score and applicant information that an organization would likely collect to explore the effectiveness of a proposed system for hiring for a particular position. The data file consists of $8$ variables collected for $159$ applicants. Using the information contained in the file, explore various features of the proposed system by answering the following questions. Each question is worth $5$ points. Please show your work and explain your answers.

Question $1$ Class Activity $9$

Does the Employment Inventory display an acceptable level of consistency in scores when it is administered across time? Do the questions of the Employment Inventory display an acceptable level of an alternative form reliability? Why is it important to measure and track the reliability of selection tools? The Employment Inventory $($EI$)$ is a personality test. It consists of a number of questions which ask applicants to describe their general behaviors, attitudes, and preferences with respect to life and work. Applicants complete it on their own time, usually at home, and submit their answers for analysis. Give an example of a source of error that can affect the reliability of the Employment Inventory. Hint: you will need to use the columns of $$EI Time $1$ & EI Time $2$in the Excel file for test$-$retest reliability and the columns of $$EI Form $1$ & EI Form $2$ for alternative form reliability. Also, you$$ll need to think clearly about the sources of error that we discussed in class. When answering the last question, some are relevant while others are not.

$$ Test$-$retest reliability?

$$ Alternative form reliability?

$$ Does the EI display an acceptable level of reliability?

$$ Why tracking reliability is important?

$$ Acceptable sources of error?