CA Foundation · Quantitative Aptitude · Measures of Central Tendency and Dispersion
A dataset has values: 12, 18, 16, 14, 20, 16, 22. What is the median of this dataset?
The median is 16. After arranging the seven values in ascending order, the median is the 4th value (middle position), which divides the dataset into two equal halves.
- A16Correct
- B17
- C18
- D14
Explanation
First, arrange in ascending order: 12, 14, 16, 16, 18, 20, 22. There are 7 values (odd count), so the median is the middle value at position (7+1)/2 = 4th value, which is 16. Option 2 (17) would result from averaging the two middle values, which is only done with even-count datasets.
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