BRING BACK CZERES

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Across
  1. 3. The middle number.
  2. 5. If data is widely spread it can be split into______.
  3. 6. A survey beforehand to identify errors.
  4. 8. Data from the investigator.
  5. 9. Chosen without a conscious decision - equal chance.
  6. 11. Pairs of related variables.
  7. 13. Used to classify regions of a geographical area.
  8. 14. A question with no suggested answers.
  9. 17. table can be used to see raw data.
  10. 19. Data which can take any value.
  11. 20. A stem and leaf diagram requires a _____.
  12. 21. Joins the mid-points of the top of the bars with straight lines.
  13. 23. Data from another source.
Down
  1. 1. Data from part of the population.
  2. 2. All people involved in an investigation.
  3. 4. Uses symbols or pictures to represent a certain number of items.
  4. 5. A running total of frequencies.
  5. 7. Data that can only take specific values.
  6. 10. Bar chart with no gaps.
  7. 12. Displays frequencies for two categories of data.
  8. 15. An assumption made as a starting point for an investigation.
  9. 16. With information from the entire population.
  10. 18. occurs most often.
  11. 22. largest value - smallest value