DA0-001 · Question #53
Which of the following BEST describes standard deviation?
The correct answer is C. A measure of the amount of dispersion of a set of values. Standard deviation quantifies the average amount of variability or dispersion of individual data points around the mean in a dataset.
Question
Which of the following BEST describes standard deviation?
Options
- AA measure that is used to establish a relationship between two variables
- BA measure of how data is distributed
- CA measure of the amount of dispersion of a set of values
- DA measure that is used to find the significant difference between variables
How the community answered
(30 responses)- A3% (1)
- C93% (28)
- D3% (1)
Why each option
Standard deviation quantifies the average amount of variability or dispersion of individual data points around the mean in a dataset.
Establishing a relationship between two variables is typically done using correlation or regression analysis, not standard deviation.
While standard deviation contributes to understanding data distribution, a complete measure of distribution also includes skewness and kurtosis; standard deviation specifically measures dispersion.
Standard deviation is a statistical measure that quantifies the amount of variation or dispersion of a set of values, indicating how spread out the numbers are from the average (mean).
Finding significant differences between variables often involves hypothesis testing (e.g., t-tests, ANOVA), not standard deviation directly.
Concept tested: Statistical measures - standard deviation
Source: https://learn.microsoft.com/en-us/office/excel/functions/stdev-functions-overview
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