When the frequency distribution is normal
Reviewed by Dalvoy
UPSC Civil Services preparation
- Amedian, mode and mean are all different from one another
- Bmean, mode and median are identicalCorrect
- Cmean is greater than mode
- Dmean is greater than median
Explanation
In a normal distribution, also known as a bell shaped curve, the data is perfectly symmetrical around the center. Because the distribution is balanced and not skewed to either side, the highest point of the curve represents the most frequent value which is the mode, the exact middle value which is the median, and the average value which is the mean. Therefore, in a perfectly normal distribution, the mean, median, and mode all coincide at the same central point and are identical.
Related questions
More UPSC Prelims practice from the same subject and topic.
- Prelims 1996GS1science-and-technology
Which one of the following is a modified stem?
- Prelims 1996GS1science-and-technology
Fat present below the skin surface in our body, acts as a barrier against
- Prelims 1996GS1science-and-technology
Which of the following professional (s) are more likely to run the risk of a permanent change in their cell’s DNA? I. Researchers using carbon-14 isotope II. X-ray technician III. Coal miner IV. Dyer …
- Prelims 1996GS1science-and-technology
Which one of the following is not an essential micronutrient for plants?
- Prelims 1996GS1science-and-technology
Of the four landmarks in medical history given below, which one was the first to take place?
- Prelims 1996GS1science-and-technology
Living organisms require at least 27 elements of which 15 are metals. Among these, those required in major quantities include