Measurement in Staffing

This set of flashcards covers key concepts from the lecture on measurement in staffing, focusing on validity, reliability, and various types of validation studies.

What is the definition of validity in measurement?

Validity refers to the accuracy of a measure in representing what it intends to assess.

What are the two types of validation studies typically conducted?

Criterion-related validation and content validation.

What is the goal of measures in staffing?

The goal is to obtain a score for a person on a given attribute to differentiate individuals and make decisions.

What is measurement in the context of staffing?

The process of assigning numbers to objects to represent quantities of an attribute of those objects.

What is a correlation coefficient?

It summarizes the strength and direction of a relationship between two sets of scores.

What is the importance of reliability in measures?

Reliability ensures that a measure provides a consistent set of scores representing an attribute.

What is the difference between objective and subjective measures?

Objective measures have predetermined rules for assigning numbers, while subjective measures involve a rater assigning scores.

What does central tendency refer to in scoring?

It refers to the statistical measures that indicate the center or typical value of a distribution of scores.

What are the levels of measurement?

Nominal, ordinal, interval, and ratio.

What is content validation in staffing?

It involves demonstrating that predictor scores represent a sample of situations occurring on the job without using criterion measures.

In which level of measurement are attributes categorized with numbers but without any order?

Nominal

In which level of measurement are objects rank-ordered based on how much of an attribute they possess?

Ordinal

In which level of measurement are differences between points equal, but there is no true zero?

Interval

Which level of measurement has equal intervals and a true zero point?

Ratio

What do you do first to find the mean?

Add all the numbers

After adding the numbers, what do you do next to get the mean?

Divide by how many numbers there are

What does the median mean?

The middle number

What does the mode mean?

The number that shows up most

What does the range tell you?

The difference between the biggest and smallest number