Final answer:
Juanita's average overall rating of 4 out of 5 suggests a B. leniency error, where subordinates are rated more favorably than their performance might warrant. This tends to occur when evaluators provide higher ratings uniformly rather than assessing individual performance accurately.
Step-by-step explanation:
If Juanita's average overall rating for her subordinates is 4 out of 5 on their performance appraisals, she has likely committed the error of B. leniency error.
A leniency error occurs when a reviewer rates individuals or their performance more favorably than they should, based on the actual evidence of performance.
This is characterized by giving higher ratings across the board regardless of the actual performance levels.
The other options provided in the question are different types of appraisal errors.
A central tendency error happens when evaluators rate most employees within a narrow range, regardless of differences in actual performance.
The severity error is the opposite of leniency error, where evaluators rate people or their performance more harshly than is warranted.
Lastly, the halo effect error occurs when an overall positive impression of a person biases the evaluator to rate them highly in all areas of performance.