Statistics A Level

The flashcards below were created by user yotomoco on FreezingBlue Flashcards.

  1. What is continuous data?
    Data that can take any value in a given range
  2. What is discrete data?
    Data that can take only specific values in a given range
  3. What is quantitative data?
    Data associated with numerical observations
  4. What is qualitative data?
    Data associated with non-numerical observations
  5. Equation to find the median of a set of data
    • n
    • 2
    • if = whole number find the mid-point of the corresponding term and the term above
    • if ≠ whole number round the number up and pick the corresponding term
  6. Equation to find the mean of a set of data
    • Image Upload
    • x = data
    • n = number of observations
  7. Equation to find the mean of data in a table
    • Image Upload
    • f = frequency
    • x = data or midpoint when grouped data
  8. Equation for Q1
    • Image Upload
    • n = number of observations
  9. Equation for Q3
    • Image Upload
    • n = number of observations
  10. Equation for interquartile range
    Image Upload
  11. Equation to find the Image Uploadth percentile, PImage Upload
    • Image Upload
    • x = percentile
    • n = number of observations
  12. Equation for interpercentile range
    • Image Upload
    • P = percentile
    • m/n = number of the percentile
  13. Equation for variance (using x_bar)
    • Image Upload
    • x = data or midpoint when grouped data
    • x_bar = mean
    • n = number of observations
  14. Equation for variance (using x and n only)
    • Image Upload
    • x = data or midpoint when grouped data
    • n = number of observations
  15. Equation for standard deviation
    Image Upload
  16. Equation for lower bounds (outlier test)
    • Image Upload
    • Q= lower quartile
    • IQR = interquartile range
  17. Equation for upper bounds (outlier test)
    • Image Upload
    • Q= upper quartile
    • IQR = interquartile range
  18. Equation for frequency density
    • Image Upload
    • f = frequency
    • class width = difference between the lowest bound in the class and the highest
  19. what type of distribution is this?

    Image Upload
    Symmetrical
  20. What type of distribution is this?
    Image Upload
    positively skewed
  21. What type of distribution is this?
    Image Upload
    negatively skewed
  22. What type of distribution is this?
    Image Upload
    negatively skewed
  23. What type of distribution is this?
    Image Upload
    positively skewed
  24. What type of distribution is this?
    Image Upload
    symmetrical
  25. Equation to work out how skewed the data is
    • Image Upload
    • x_bar = mean
    • SD = standard deviation
    • the larger the number the larger the skew
    • the closer the number to zero the more symmetrical the data
    • a negative number means a negative skew
    • a positive number means a positive skew
  26. Define: experiment
    a repeatable process that gives rise to a number of outcomes
  27. Define: event
    a collection (or set) of one or more outcomes
  28. Define: sample space
    the set of all possible outcomes of an experiment
  29. On a Venn diagram:
    A ∩ B
    the overlap between event A and B
  30. On a Venn diagram:
    A ∪ B
    the area contained within both A and B including the overlap
  31. On a Venn diagram:
    A '
    Everywhere on the venn diagram apart from anywhere inside A
Author:
yotomoco
ID:
249225
Card Set:
Statistics A Level
Updated:
2013-11-26 22:17:11
Tags:
Statistics Level
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Description:
srtyjk
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