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






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






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






4. Summarized with the standard deviation - interquartile range - and range






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






6. 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






7. Gives a value in 'y-units per x-unit'; changes of one unit in x are associated with changes of b1 units in predicted values of y






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






9. A variable whose levels are controlled by the experimenter






10. Displays counts and - sometimes - percentages of individuals falling into named categories on two or more variables; categorizes the individuals on all variables at once - to reveal possible patterns in one variable that may be contingent on the cate






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






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






13. Distributions with two modes






14. 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






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






16. Manipulates factor levels to create treatments - randomly assigns subjects to these treatment levels - and then compares the responses of the subject groups across treatment levels






17. Gives the possible values of the variable and the frequency or relative frequency of each value






18. When either those who could influence or evaluate the results is blinded






19. An observational study in which subjects are selected and then their previous conditions or behaviors are determined






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






21. Found by summing all the data values and dividing by the count






22. A sample that consists of the entire population






23. An individual result of a component of a simulation






24. A variable that names categories (whether with words or numerals)






25. The middle value with half of the data above and half below it






26. Useful family of models for unimodal - symmetric distributions






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






28. The natural tendency of randomly drawn samples to differ






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






30. The entire group of individuals or instances about whom we hope to learn






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






32. The linear equation y-hat = b0 + b1x that satisfies the least squares criterion






33. When doing this - consider their shape - center - and spread






34. The square root of the variance






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






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






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






38. Displays data that change over time






39. When both those who could influence and evaluate the results are blinded






40. The distribution of a variable restricting the who to consider only a smaller group of individuals






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






42. Shows a bar representing the count of each category in a categorical variable






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






44. 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






45. A sampling design in which entire groups are chosen at random






46. Numerically valued attribute of a model






47. In a statistical display - each data value should be represented by the same amount of area






48. 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






49. A numerical measure of the direction and strength of a linear association






50. Any individual associated with an experiment who is not aware of how subjects have been allocated to treatment groups