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. Anything in a survey design that influences response






2. A variable whose levels are controlled by the experimenter






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






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






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






6. An individual result of a component of a simulation






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






8. 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






9. 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


10. Tells how many standard deviations a value is from the mean; have a mean of zero and a standard deviation of one






11. Consists of the individuals who are conveniently available






12. Numerically valued attribute of a model






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






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






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






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






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






18. 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






19. Sampling schemes that combine several sampling methods






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






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






22. A distribution is this if the two halves on either side of the center look approximately like mirror images of each other






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






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






25. The differences between data values and the corresponding values predicted by the regression model; ____ = observed value - predicted value






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






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






28. Extreme values that don't appear to belong with the rest of the data






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






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






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






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






33. Control - randomize - replicate - block






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






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






36. Any attempt to force a sample to resemble specified attributes of the population






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






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






39. Doing this is equivalent to changing its units






40. 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






41. A sample that consists of the entire population






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






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






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






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






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






47. The difference between the first and third quartiles






48. Although linear models provide an easy way to predict values of y for a given value of x - it is unsafe to predict for values of x far from the ones used to find the linear model equation; predictions should not be trusted






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






50. 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