Which statement defines a trend in BAS?

Which statement defines a trend in BAS?

• A. A trend is a time-series record of a point or set of points.
• B. A trend is a forecast of future energy prices.
• C. A trend is a constant reading of a single sensor.
• D. A trend is an alarm category.

Answer: (A)

A trend in a building automation system is a time-series record of data points collected over time. This means you gather readings from one or more sensors at successive moments and view how those values change, forming a history you can analyze for patterns, cycles, or drift. This historical view helps you understand behavior such as how zone temperature varies throughout the day or how energy usage evolves from hour to hour. It’s not a forecast of future energy prices, which would be a prediction rather than a recording of past data. It’s not a constant reading of a single sensor, which would show no change over time and wouldn’t reveal trends. And it’s not an alarm category, which relates to alerts triggered by thresholds rather than the ongoing sequence of measurements.

A trend in a building automation system is a time-series record of data points collected over time. This means you gather readings from one or more sensors at successive moments and view how those values change, forming a history you can analyze for patterns, cycles, or drift. This historical view helps you understand behavior such as how zone temperature varies throughout the day or how energy usage evolves from hour to hour.

It’s not a forecast of future energy prices, which would be a prediction rather than a recording of past data. It’s not a constant reading of a single sensor, which would show no change over time and wouldn’t reveal trends. And it’s not an alarm category, which relates to alerts triggered by thresholds rather than the ongoing sequence of measurements.