APCSP Big Idea 2 Vocabulary

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Across
  1. 3. A process for reducing the number of bits needed to represent something without losing any information. This process is reversible.
  2. 5. A 7-bit character-encoding standard that assigns a numeric value to each letter, number, and symbol (128 characters total).
  3. 6. A color model that creates colors on digital displays by combining varying amounts of red, green, and blue light.
  4. 8. A base-10 number system using the digits 0–9; the number system people use in everyday life.
  5. 12. Managing complexity by giving a collection of data (or a process) a name without needing to reference the specific details of how its represented.
  6. 15. A contraction of Binary Digit; the single unit of information in a computer, typically represented as a 0 or 1.
  7. 16. The individual measurements taken at regular intervals when converting analog data into a digital representation.
  8. 17. A character-encoding standard that extends ASCII to represent characters from virtually every written language, including emoji.
  9. 20. Data represented using a finite set of discrete values, typically as binary 0s and 1s.
  10. 21. A single digit in the base-2 (binary) number system, which uses only 0 and 1; each position represents a power of 2, unlike decimal, where each position represents a power of 10.
  11. 24. Selecting a smaller subset of a data set based on specific criteria, such as keeping or removing certain rows.
  12. 25. The collection of facts and patterns extracted from data.
Down
  1. 1. The smallest unit of color in a digital image; images are made of grids of pixels, each with its own color value.
  2. 2. A relationship between two variables in which a change in one is associated with a change in the other (correlation does not imply causation).
  3. 4. A process for creating a digital representation of analog data by measuring the analog data at regular intervals called samples.
  4. 7. A collection of related data values that is organized so it can be processed and analyzed.
  5. 9. A process that makes data uniform without changing its meaning (e.g., replacing all equivalent abbreviations, spellings, and capitalizations with the same word).
  6. 10. Information represented in a form usable by a computer, such as numbers, text, or symbols.
  7. 11. Data with values that change smoothly and continuously over time, such as sound, temperature, or position.
  8. 13. A base-16 number system using the digits 0–9 and letters A–F, often used to represent binary values more compactly.
  9. 14. A process for reducing the number of bits needed to represent something in which some information is lost or thrown away. This process is not reversible.
  10. 18. 8 bits.
  11. 19. The process of reducing the number of bits needed to represent information.
  12. 22. An error that occurs when a number is too precise to be represented exactly, so the computer rounds it.
  13. 23. Data about data.