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Data Collection & Analysis Flashcards

7 cards from real EMP 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 Collection & Analysis flashcards as text
  1. Which type of chart is best suited for visualizing energy consumption trends over a 12-month period?

    Answer: Line chart

    Line charts effectively display how a continuous variable like energy consumption changes over a sequential time period.

  2. A facility's energy data shows a consistent spike every Monday morning. What analytical technique best identifies this recurring pattern?

    Answer: Load profile analysis

    Load profile analysis plots energy demand against time of day and day of week, revealing recurring operational patterns like Monday morning startups.

  3. What is the correct formula for calculating energy savings using the IPMVP Option A (Key Parameter Measurement) approach?

    Answer: Savings = (Adjusted Baseline Energy) – (Reporting Period Energy)

    IPMVP Option A adjusts the baseline to reporting period conditions using some measured and some stipulated parameters, then subtracts actual reporting energy.

  4. Which data quality issue occurs when a meter records the same value repeatedly due to a communication failure?

    Answer: Frozen data

    Frozen data (stuck values) occurs when a sensor or meter stops updating and transmits the last valid reading repeatedly.

  5. In energy data analysis, what is 'data normalization' primarily used for?

    Answer: Adjusting energy data to account for varying operating conditions

    Normalization adjusts raw consumption data for factors like weather, occupancy, or production output to enable meaningful performance comparisons.

  6. A thermal energy meter measures heat flow by combining which two types of measurements?

    Answer: Flow rate and temperature differential

    BTU/thermal meters calculate energy as the product of fluid flow rate and the temperature difference between supply and return lines.

  7. What is the purpose of a 'baselining period' in an energy management measurement and verification plan?

    Answer: To establish pre-retrofit energy performance as the reference for calculating savings

    The baseline period captures energy use before an efficiency measure is implemented, providing the reference against which future savings are measured.