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






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






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






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






5. Design Randomization occurring within blocks






6. A variable whose values are compared across different treatments






7. A sample that consists of the entire population






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






9. A scatterplot shows an association that is this if there is little scatter around the underlying relationship






10. Holds information about the same characteristic for many cases






11. 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






12. The experimental units assigned to a baseline treatment level - typically either the default treatment - which is well understood - or a null - placebo treatment






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






14. Each predicted y-hat tends to be fewer standard deviations from its mean than its corresponding x was from its mean






15. A representative subset of a population - examined in hope of learning about the population






16. Consists of the individuals who are conveniently available






17. A normal model with a mean of 0 and a standard deviation of 1






18. A positive ____ or association means that - in general - as one variable increases - so does the other; when increases in one variable generally correspond to decreases in the other - the association is negative






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






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






21. An individual result of a component of a simulation






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






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






24. A study that asks questions of a sample drawn from some population in the hope of learning something about the entire population






25. Anything in a survey design that influences response






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






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






28. 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






29. 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






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






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






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






33. 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






34. An arrangement of data in which each row represents a case and each column represents a variable






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






36. To describe this aspect of a distribution - look for single vs. multiple modes - and symmetry vs. skewness






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






38. Uses adjacent bars to show the distribution of vales in a quantitative variable; each bar represents the frequency (or relative frequency) of values falling in an interval of values






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






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






41. Values of this record the results of each trial with respect to what we were interested in






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






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






44. A value that attempts the impossible by summarizing the entire distribution with a single number - a 'typical' value






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






46. An individual about whom or which we have data






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






48. The difference between the first and third quartiles






49. The number of individuals in a sample






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