CEA Data Analysis & Reporting 4

Question 1

In a scatter plot of energy use versus outdoor air temperature, a strong positive correlation during summer months most likely indicates:

Accepted Answer

Significant cooling load driven by outdoor temperature

Answer

A positive correlation between energy use and outdoor temperature in summer indicates that cooling loads—driven by HVAC systems responding to heat—are a major energy driver.

Question 2

What does the term 'baseload' refer to in energy data analysis?

Accepted Answer

The minimum energy consumption that occurs regardless of weather or production

Answer

Baseload is the minimum energy consumption level that persists regardless of weather or production changes, typically representing always-on equipment like servers, refrigeration, and lighting.

Question 3

An energy analyst is comparing two buildings using Energy Star Portfolio Manager. The primary output metric is:

Accepted Answer

Energy Star score (1–100) based on source energy intensity

Answer

Energy Star Portfolio Manager generates a 1–100 score based on source energy use intensity compared to similar buildings nationally, where 50 is median and 75+ qualifies for certification.

Question 4

When an energy report shows a facility's greenhouse gas (GHG) emissions in CO2e, the 'e' stands for:

Accepted Answer

Equivalent

Answer

CO2e (carbon dioxide equivalent) converts all greenhouse gases to their warming potential relative to CO2, allowing different GHGs to be expressed in a single comparable unit.

Question 5

An energy analyst uses an OLS regression model with R² = 0.92. What does this indicate?

Accepted Answer

92% of the variance in energy consumption is explained by the independent variable(s)

Answer

R² = 0.92 means 92% of the variation in energy consumption is explained by the model's independent variables, indicating a strong and reliable predictive relationship.

(CEA) Certified Energy Analyst Practice Test

(CEA) Certified Energy Analyst Practice Test

CEA Data Analysis & Reporting 4