DA0-001 Question #341: Real Exam Question with Answer & Explanation

The correct answer is B: Range. The range is the best method to describe the overall spread or extent of changes in values within a table by identifying the difference between the maximum and minimum values. It provides a simple measure of the total variability.

Data Analysis

Question

Given the following table: Which of the following methods is the best way to describe the changes in the values in the table?

Options

AAverage
BRange
CStandard deviation
DMedian

Explanation

The range is the best method to describe the overall spread or extent of changes in values within a table by identifying the difference between the maximum and minimum values. It provides a simple measure of the total variability.

Common mistakes.

A. The average (mean) describes the central tendency of the data, not the changes or spread of values.
C. Standard deviation measures the average amount of variability or dispersion around the mean, which is a more complex measure of spread than simply describing the total change.
D. The median is another measure of central tendency, representing the middle value, not the extent of changes in values.

Concept tested. Descriptive statistics, measures of variability

Reference. https://learn.microsoft.com/en-us/azure/architecture/data-guide/big-data/descriptive-analytics

Topics

#Statistical measures#Data variability#Descriptive statistics#Range

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