Question

Identify the incorrect statement in the context of measures of variability:

• A. Range is the difference between maximum and minimum values of the data.
• B. Mean is the average of numeric values of an attribute.
• C. Standard deviation refers to differences within the set of data of a variable.
• D. Measures of variability is also known as measures of dispersion.

Hint:

Always distinguish between central tendency (Mean, Median, Mode) and variability (Range, Variance, Standard Deviation).

Answer 1

The Correct Option is B

Step 1: Definitions Review.
- Range: Maximum value minus minimum value → Accurate.
- Mean: Indicator of central tendency, not spread → Inaccurate.
- Standard Deviation: Quantifies data point deviation from the mean (a measure of spread) → Accurate.
- Variability/Dispersion: Both terms describe data spread → Accurate.

Step 2: Determination.
The inaccurate assertion is that the Mean quantifies variability. The mean indicates central tendency, not data dispersion.
Final Answer: \[\boxed{\text{Mean is the average of numeric values of an attribute.}}\]