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. Control - randomize - replicate - block






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






3. Displays data that change over time






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






5. The number of individuals in a sample






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






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






8. 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






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






10. Distributions with more than two modes






11. Found by substituting the x-value in the regression equation; they're the values on the fitted line






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






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






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






15. The difference between the first and third quartiles






16. 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






17. Consists of the minimum and maximum - the quartiles Q1 and Q3 - and the median






18. Holds information about the same characteristic for many cases






19. We do this by taking the logarithm - the square root - the reciprocal - or some other mathematical operation on all values in the data set






20. A distribution that's roughly flat






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






22. The specific values that the experimenter chooses for a factor






23. An equation or formula that simplifies and represents reality






24. The natural tendency of randomly drawn samples to differ






25. Data points whose x-values are far from the mean of x are said to exert ____ on a linear model; with high enough ____ - residuals can appear to be deceptively small






26. Design Randomization occurring within blocks






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






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






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






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






31. A sample that consists of the entire population






32. 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






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






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






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






36. Numerically valued attribute of a model






37. An individual result of a component of a simulation






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






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






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






41. Anything in a survey design that influences response






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






43. 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






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






45. 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






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






47. Consists of the individuals who are conveniently available






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






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






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