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AIF-C01 practice question: Use cases and ML techniques (4 of 5)

Fundamentals of AI and ML A free question from our original AIF-C01 practice exam. Try it, then open the answer to see why each option is right or wrong.

A water utility records the pressure in each pipe every minute and wants to forecast pressure for the next hour. How is this data BEST described?

Choose one answer.

  1. A. Image data, because it can be drawn as a chart
  2. B. Unstructured text data, because the readings are logged
  3. C. Unlabelled data, because nobody has tagged the readings
  4. D. Time-series data, because the values are ordered by time
Show the answer and explanation

Answer: D

  • A. Wrong: The readings can be plotted, but the data itself is numeric measurements, not pixels.
  • B. Wrong: The readings are numbers with timestamps in a fixed format. That is structured data, not free text.
  • C. Wrong: For forecasting, past readings act as the targets for future ones, so the defining trait here is time order.
  • D. Right: Correct. Measurements recorded at regular time intervals, where order matters, are time-series data.

Explanation

Time-series data is a sequence of values recorded over time, such as sensor readings, sales per day or stock prices. Its order matters, which is why it suits forecasting. Other common data types include tabular, image, text, and labelled or unlabelled data.

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