Praxis Core Academic Skills for Educators: Mathematics (5733)Statistics and ProbabilityEasy
A high school counselor is analyzing the test scores of 10 students on a recent math exam. The scores are: 78, 85, 92, 78, 95, 88, 78, 90, 85, 82. What is the mode of these test scores?
- A92
- B86
- C85
- D78
Show answer & explanationAnswer & explanation
Correct answer: D. 78
The mode is the number that appears most frequently in a data set. In this set, 78 appears three times, which is more than any other score.
Why the other options are wrong
- A. 92 appears only once.
- B. 86 is the mean, not the mode.
- C. 85 appears twice, but 78 appears more frequently.
Mode
The mode is the value that appears most frequently in a data set.
- A data set can have one mode (unimodal), multiple modes (multimodal), or no mode.
- It is a measure of central tendency.
- It is most useful for categorical or discrete data.
Memory trick: Mean is average, Median is middle, Mode is most.