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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 ____ we care about most is straight






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






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






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






5. A sample drawn by selecting individuals systematically from a sampling frame






6. The difference between the lowest and highest values in a data set






7. Useful family of models for unimodal - symmetric distributions






8. Numerically valued attribute of a model






9. The sum of squared deviations from the mean - divided by the count minus one






10. Lists the categories in a categorical variable and gives the count or percentage of observations for each category






11. Individuals on whom an experiment is performed






12. An individual about whom or which we have data






13. Bias introduced to a sample when individuals can choose on their own whether to participate in the sample






14. Any data point that stands away from the others; can be extraordinary by having a large residual or by having high leverage






15. Holds information about the same characteristic for many cases






16. Ideally tells who was measured - what was measured - how the data were collected - where the data were collected - and when and why the study was performed






17. 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






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






19. Anything in a survey design that influences response






20. When averages are taken across different groups - they can appear to contradict the overall averages

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






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






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






24. The distribution of either variable alone in a contingency table; the counts or percentages are the totals found in the margins (last row or column) of the table






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






26. A hump or local high point in the shape of the distribution of a variable; the apparent locations of these can change as the scale of a histogram is changed






27. An event is this if we know what outcomes could happen - but not which particular values will happen






28. 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






29. Control - randomize - replicate - block






30. A sample that consists of the entire population






31. A sample is this if the statistics computed from it accurately reflect the corresponding population parameters






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






33. When groups of experimental units are similar - it is a good idea to gather them together into these






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






35. Adding a constant to each data value adds the same constant to the mean - the median - and the quartiles - but does not change the standard deviation or IQR






36. Consists of the individuals who are conveniently available






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






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






39. Summarized with the mean or the median






40. The most basic situation in a simulation in which something happens at random






41. 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






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






43. A numerical summary of how tightly the values are clustered around the 'center'






44. If data consist of two or more groups that have been thrown together - it is usually best to fit different linear models to each group than to try to fit a single model to all of the data






45. The difference between the first and third quartiles






46. Displays data that change over time






47. A point that does not fit the overall pattern seen in the scatterplot






48. 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






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






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