Data Analysis & Reporting Flashcards
7 cards from real CEA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Data Analysis & Reporting flashcards as text
Which ASHRAE audit level requires the most detailed data collection and analysis, including energy simulation modeling?
Answer: Level III – Detailed Analysis of Capital-Intensive Modifications
ASHRAE Level III audits involve detailed engineering analysis and computer simulation to evaluate capital-intensive modifications, requiring the most rigorous data collection of the three audit levels.
In Measurement & Verification, Option A under IPMVP is characterized by:
Answer: Partial metering with stipulated values for some parameters
IPMVP Option A (Retrofit Isolation – Key Parameter Measurement) meters some parameters while stipulating others based on engineering estimates, balancing accuracy with lower monitoring costs.
A facility switches from natural gas to electricity for heating. When reporting energy in a unified report, what unit should be used to compare the two energy sources?
Answer: BTU or MMBTU as a common energy unit
BTU or MMBTU (million BTU) is the standard common unit for comparing different energy sources in engineering reports, enabling accurate apples-to-apples energy analysis.
What statistical issue occurs when an energy regression model includes two independent variables that are highly correlated with each other?
Answer: Multicollinearity
Multicollinearity occurs when independent variables are highly correlated, making it difficult to isolate each variable's individual effect and reducing the reliability of regression coefficients.
When presenting energy audit findings to a non-technical audience, which reporting element is most effective for communicating potential savings?
Answer: Dollar savings and simple payback period in plain language
Non-technical stakeholders respond best to financial metrics like dollar savings and payback period, which directly connect energy improvements to business outcomes they can act on.
An energy analyst notices a sudden 15% spike in electricity consumption that cannot be explained by weather or production changes. The best next step is to:
Answer: Investigate operational logs, equipment additions, or metering errors to identify the root cause
Unexplained consumption spikes require root cause investigation—reviewing operational logs, checking for new equipment, or identifying metering errors—before drawing conclusions or adjusting baselines.
Which reporting metric is most useful for tracking a manufacturing plant's energy performance independently of production volume changes?
Answer: Specific energy consumption (SEC) in BTU per unit produced
Specific energy consumption (SEC) normalizes energy use by production output, allowing fair performance comparisons across periods with different production volumes.