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AP Statistics Vocab

Subjects : statistics, ap
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. The linear equation y-hat = b0 + b1x that satisfies the least squares criterion






2. An individual result of a component of a simulation






3. Bias introduced to a sample when a large fraction of those sampled fails to respond






4. In a normal model - about 68% of values fall within 1 standard deviation of the mean - about 95% fall within 2 standard deviations of the mean - and about 99.7% fall within 3 standard deviations of the mean






5. A variable other than x and y that simultaneously affects both variables - accounting for the correlation between the two






6. Consists of the individuals who are conveniently available






7. Graphs a dot for each case against a single axis






8. Extreme values that don't appear to belong with the rest of the data






9. This - b0 - gives a starting value in y-units; it's the y-hat-value when x is 0






10. A treatment known to have no effect - administered so that all groups experience the same conditions






11. Places in order the effects that many re-expressions have on the data






12. Value found by subtracting the mean and dividing by the standard deviation






13. All experimental units have an equal chance of receiving any treatment






14. A variable in which the numbers act as numerical values; always has units






15. Shows quantitative data values in a way that sketches the distribution of the data






16. Design Randomization occurring within blocks






17. Doing this is equivalent to changing its units






18. A display to help assess whether a distribution of data is approximately normal; if it is nearly straight - the data satisfy the nearly normal condition






19. This of sample size n is one in which each set of n elements in the population has an equal chance of selection






20. A numerically valued attribute of a model for a population






21. The sequence of several components representing events that we are pretending will take place






22. A list of individuals from whom the sample is drawn






23. The process - intervention - or other controlled circumstance applied to randomly assigned experimental units






24. The ith ___ is the number that falls above i% of the data






25. Any systematic failure of a sampling method to represent its population; common errors are voluntary response - undercoverage - nonresponse ____ - and response ____






26. When the levels of one factor are associated with the levels of another factor so their effects cannot be separated






27. In a retrospective or prospective study Subjects who are similar in ways not under study may be ____ and then compared with each other on the variables of interest






28. The parts of a distribution that typically trail off on either side; they can be characterized as long or short






29. The lower of this is the value with a quarter of the data below it; the upper of this has a quarter of the data above it






30. Displays the 5-number summary as a central box with whiskers that extend to the non-outlying data values






31. A distribution is this if the two halves on either side of the center look approximately like mirror images of each other






32. Value calculated from data to summarize aspects of the data






33. A sampling scheme that biases the sample in a way that gives a part of the population less representation than it has in the population






34. Individuals on whom an experiment is performed






35. The square of the correlation between y and x; gives the fraction of the variability of y accounted for by the least squares linear regression on x; an overall measure of how successful the regression is in linearly relating y to x






36. Having one mode; this is a useful term for describing the shape of a histogram when it's generally mound-shaped






37. A variable whose levels are controlled by the experimenter






38. An observational study in which subjects are followed to observe future outcomes






39. Shows the relationship between two quantitative variables measured on the same cases






40. Variables are said to be this if the conditional distribution of one variable is the same for each category of the other






41. Numerically valued attribute of a model






42. Done to eliminate units; values can be compared and combined even if the original variables had different units and magnitudes






43. This criterion specifies the unique line that minimizes the variance of the residuals or - equivalently - the sum of the squared residuals






44. Tells how many standard deviations a value is from the mean; have a mean of zero and a standard deviation of one






45. Systematically recorded information - whether numbers or labels - together with its context






46. Displays data that change over time






47. A distribution that's roughly flat






48. To be valid - an experiment must assign experimental units to treatment groups at random






49. An equation of the form y-hat = b0 + b1x






50. Summarized with the mean or the median