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# Predictive Bias Quiz

Created by
@HallowedHeliotrope

.781

### What is the common regression equation based on?

One regression equation for all groups

### What is intercept bias in predictive bias analysis?

When the intercepts are different for different groups

### Which of the following best defines predictive bias?

<p>The degree to which a test's scores are equally predictive of an outcome for two groups</p> Signup and view all the answers

### What is the formula to predict a trainee's supervisor rating based on their aptitude score?

<p>Y = 56.03 + .58(69)</p> Signup and view all the answers

### What are the two steps involved in predictive bias analysis?

<p>Conducting a bivariate regression analysis and determining whether the test scores predict the dependent variable equally well across groups</p> Signup and view all the answers

### What is the slope in bivariate regression?

<p>The expected increase or decrease in the dependent variable (Y) as a function of an increase or decrease in the independent variable (X)</p> Signup and view all the answers

### Which of the following best describes slope bias?

<p>When two groups have the same intercept but different slopes</p> Signup and view all the answers

### What is an example of outcome score bias?

<p>When the supervisor providing the ratings is biased in favor of one group</p> Signup and view all the answers

### What is the impact of differences in reliability between two groups?

<p>It can cause differences in slopes and intercepts</p> Signup and view all the answers

### What does it mean when intercept and slope biases co-occur?

<p>There is a complex relationship between the size of predictor variable and outcome variable scores for the different groups</p> Signup and view all the answers

## Study Notes

### Regression Analysis

• The standardized slope in the bivariate regression case is 1.
• The common regression equation is based on the formula: Y = a + bX, where Y is the dependent variable, X is the independent variable, a is the intercept, and b is the slope.

### Predictive Bias

• Intercept bias occurs when the regression line does not intersect the Y-axis at the correct point, resulting in incorrect predictions.
• Predictive bias is defined as the difference between the predicted and actual outcomes, which can be due to various sources such as slope bias, intercept bias, or outcome score bias.

### Predictive Bias Analysis

• The formula to predict a trainee's supervisor rating based on their aptitude score is: Y = a + bX, where Y is the supervisor rating, X is the aptitude score, a is the intercept, and b is the slope.
• The two steps involved in predictive bias analysis are:
• Examining the regression line to identify potential biases
• Evaluating the impact of differences in reliability between two groups

### Slope Bias

• Slope bias occurs when the regression line has a different slope for different groups, resulting in incorrect predictions.
• The slope in bivariate regression represents the change in the dependent variable (Y) for a one-unit change in the independent variable (X), while controlling for other variables.

### Outcome Score Bias

• Outcome score bias occurs when the scores of the outcome variable are not equally valid across different groups.

### Co-occurrence of Biases

• When intercept and slope biases co-occur, it means that the regression line has both an incorrect intercept and an incorrect slope, resulting in inaccurate predictions.

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## Description

Test your knowledge on Predictive Bias with this quiz! Learn about the degree to which a test's scores are equally predictive of an outcome for different groups and understand how predictive bias analyses are conducted. This quiz is ideal for individuals interested in assessment and evaluation.

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