Across
- 2. The complete group being studied.
- 4. A systematic error that causes results to favour certain outcomes.
- 7. The running total of frequencies up to a given value.
- 9. Selecting individuals at regular intervals (e.g. every 10th person).
- 10. The value below which 75% of the data lie.
- 12. The middle value when data are arranged in order.
- 15. Frequency divided by class width.
- 16. The square root of the variance; measures spread around the mean.
- 17. Data collected from a sample or population through questions.
- 19. Every possible sample of a given size has an equal chance of being selected.
- 20. Data previously collected by someone else.
- 23. Can only take specific values, usually whole numbers.
- 24. Making predictions beyond the range of observed data.
- 25. Uses touching bars to display continuous data grouped into class intervals.
- 26. Numerical data representing counts or measurements.
Down
- 1. Data collected from every member of the population.
- 3. An unusually large or small value.
- 5. Making predictions within the range of observed data.
- 6. A diagram showing the minimum, lower quartile, median, upper quartile and maximum.
- 7. Can take any value within a range.
- 8. Measures the spread of the middle 50% of the data.
- 11. The value below which 25% of the data lie.
- 13. The most frequently occurring value.
- 14. Taking a group of observations at regular intervals.
- 18. Sum of values divided by the number of values.
- 20. A subset of the population used to collect data.
- 21. Non-numerical data describing qualities or categories.
- 22. Data collected first-hand by the researcher.