All of the following are the measures of central tendency, EXCEPT:

Appeared in: DSSSB October 2024

Explanation

Variance is the correct answer as it is a measure of dispersion, not central tendency.
Measures of dispersion, like variance, quantify the spread or variability of data points around the mean.
In contrast, measures of central tendency (Mean, Median, Mode) aim to identify a single value that best represents the center of a dataset.

Option B: Mean is one of the three primary measures of central tendency.
Option C: Mode is a fundamental measure of central tendency, representing the most frequent value.
Option D: Median is a key measure of central tendency, representing the middle value of a dataset.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Measures of Central Tendency vs. Measures of Dispersion as background academic context rather than a clinical decision trigger.
In nursing research and evidence-based practice, understanding these statistical concepts is crucial for interpreting study results.
For example, a nurse manager might use the mean to determine the average length of stay for patients on a unit, the median to understand typical patient satisfaction scores (which might be skewed), and the variance to see how consistent patient outcomes are.
What if? If a study on a new pain medication reports a mean pain reduction of 4 points with a very high variance, it suggests that while the average effect is good, the medication's effectiveness is highly inconsistent among patients. Some may get a lot of relief, while others get very little.

How to Approach the Question

First, identify the core concept in the question stem, which is 'measures of central tendency'.
Next, notice the keyword 'EXCEPT'. This means you are looking for the option that does NOT fit into the category of 'measures of central tendency'.
Evaluate each option: A) Variance, B) Mean, C) Mode, D) Median.
Recall the definitions. Mean, Median, and Mode are the three main measures of central tendency.
Identify that Variance is a measure of dispersion (or variability), which describes the spread of data, not its center.
Therefore, Variance is the correct exception.

Concept Tested & Keywords

Concept Tested: Measures of Central Tendency vs. Measures of Dispersion
Stem keywords: measures of central tendency
Lead-in keywords: EXCEPT
Negative lead-in flag: The question asks for the exception among the given options.

QCs0IWqlQ542dmv5rSfZ4i

E6 NursingResearch Sukhpal Kaur pp. 440-442, 450-452

Practise the full DSSSB October 2024

Attempt every question from this paper in a timed mock, then review the full solution for each one.