AP Stats Important Vocab Words

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Across
  1. 2. describes a distribution whose histogram extends much farther to one side of the mean than the other – the distribution is said to be skewed in the direction of this “tail”
  2. 5. the standard deviation of a sampling distribution – measures the amount of expected error per standard deviation from the mean of the distribution
  3. 7. tells what percent of a data set falls below the given observation
  4. 9. a list of what values a variable takes on and how often it takes on each one of those values
  5. 10. using the laws of probability – this is done to select members for a sample and also to assign treatments to specific samples in experiments
  6. 13. the average of the squares of the deviations of the observation from their mean – used as a measure of spread for a data set
  7. 16. describes an experiment in which the subjects do not know which treatment they are getting
  8. 17. a variable which takes on a numeric value
  9. 19. a curve used to represent a distribution – a density curve is always on or above the horizontal axis and has a total area of exactly 1 underneath it
Down
  1. 1. states that when an SRS is drawn from a population with mean and standard deviation, the sampling distribution for the sample mean will be approximately normally distributed, and have a mean and a standard deviation
  2. 3. an individual observation that falls outside the pattern of the data set – often defined as any number that is 1.5(IQR) outside of Q1 or Q3
  3. 4. people or objects described by a set of data
  4. 6. the point at which 50% of the data is above and 50% of the data is below
  5. 8. measures the direction and strength of the linear relationship between two quantitative variables
  6. 11. a list of all possible outcomes for a random event
  7. 12. a numerical value of a factor of an experiment
  8. 14. describes a distribution whose histogram has its left and right sides as mirror images of each other
  9. 15. a specific experimental condition applied to an experimental unit or subject
  10. 16. describes a study which systematically favors certain outcomes
  11. 18. any explanatory variable in an experiment