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 most basic situation in a simulation in which something happens at random






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






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






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






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






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






7. 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






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






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






10. An individual about whom or which we have data






11. 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






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






13. The number of individuals in a sample






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






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






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






17. Having one mode; this is a useful term for describing the shape of a histogram when it's generally mound-shaped






18. 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






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






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






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






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






23. Consists of the individuals who are conveniently available






24. 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






25. 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






26. Holds information about the same characteristic for many cases






27. A sample that consists of the entire population






28. Numerically valued attribute of a model






29. Control - randomize - replicate - block






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






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






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






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






34. 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






35. 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






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






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






38. 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






39. A distribution that's roughly flat






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






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






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






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






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






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






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

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


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






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






49. The ____ we care about most is straight






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