Test your basic knowledge |

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






2. 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






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






4. When omitting a point from the data results in a very different regression model - the point is an ____






5. A sampling design in which the population is divided into several subpopulations - and random samples are then drawn from each stratum






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






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






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






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






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






11. Models random events by using random numbers to specify event outcomes with relative frequencies that correspond to the true real-world relative frequencies we are trying to model






12. The ____ we care about most is straight






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






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






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






16. The number of individuals in a sample






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






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






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. Numerically valued attribute of a model






21. When an observed difference is too large for us to believe that is is likely to have occurred naturally






22. Multiplying each data value by a constant multiplies both the measures of position and the measures of spread by that constant






23. 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






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






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






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






27. A variable whose values are compared across different treatments






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






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






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






31. 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






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






33. 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






34. These are hard to generate - but several websites offer an unlimited supply of equally likely random values






35. A study based on data in which no manipulation of factors has been employed






36. An individual result of a component of a simulation






37. Summarized with the mean or the median






38. A quantity or amount adopted as a standard of measurement - such as dollars - hours - or grams






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






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






41. A distribution is this if it's not symmetric and one tail stretches out farther than the other






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






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






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






45. The tendency of many human subjects (often 20% or more of experiment subjects) to show a response even when administered a placebo






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






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






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






49. Displays data that change over time






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