DA0-001 · Question #243
A data analyst has received a data set that contains actual and projected sales for the fourth quarter of 2019. Which of the following statistical methods should the analyst use to find the measure…
The correct answer is B. Variance. Variance is a measure of dispersion - it quantifies how spread out data points are relative to the mean. Comparing actual vs. projected sales requires understanding how much values deviate from expectations, which is exactly what variance captures. Mean (A) is a measure of…
Question
A data analyst has received a data set that contains actual and projected sales for the fourth quarter of 2019. Which of the following statistical methods should the analyst use to find the measure of dispersion?
Options
- AMean
- BVariance
- CCorrelation
- DConfidence interval
How the community answered
(21 responses)- B95% (20)
- D5% (1)
Explanation
Variance is a measure of dispersion - it quantifies how spread out data points are relative to the mean. Comparing actual vs. projected sales requires understanding how much values deviate from expectations, which is exactly what variance captures. Mean (A) is a measure of central tendency, not dispersion. Correlation (C) measures the relationship between two variables. Confidence interval (D) is an inferential statistics concept used to estimate a population parameter, not to measure spread within a dataset.
Topics
Community Discussion
No community discussion yet for this question.