CompTIA Data+ (DA0-002)Data AnalysisMedium
A quality control manager is tracking the number of defects produced per day on an assembly line. Over the past 30 days, the number of defects recorded are: 5, 8, 6, 7, 5, 9, 10, 8, 7, 6, 5, 8, 9, 7, 6, 5, 10, 8, 7, 6, 5, 9, 8, 7, 6, 5, 10, 8, 7, 6. What is the mode of this dataset?
- A5
- B8
- C6
- D7
Show answer & explanationAnswer & explanation
Correct answer: A. 5
The mode is the value that appears most frequently in a dataset. By counting the occurrences of each number, we find that '5' appears 6 times, which is more than any other number.
Why the other options are wrong
- B. The number 8 appears 6 times. (Incorrect, 5 also appears 6 times)
- C. The number 6 appears 6 times. (Incorrect, 5 also appears 6 times)
- D. The number 7 appears 6 times. (Incorrect, 5 also appears 6 times)
Mode
The value that appears most frequently in a dataset.
- Can be used for all types of data (nominal, ordinal, interval, ratio).
- A dataset can have one mode (unimodal), multiple modes (multimodal), or no mode.
- Not affected by extreme values (outliers).
Memory trick: Mode: The MOST popular number in the crowd.