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 best defense against bias - in which each individual is given a fair - random chance of selection






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






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






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






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






6. Numerically valued attribute of a model






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






8. Displays data that change over time






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






10. The ____ we care about most is straight






11. A distribution that's roughly flat






12. Bias introduced to a sample when a large fraction of those sampled fails to respond






13. Displays the 5-number summary as a central box with whiskers that extend to the non-outlying data values






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






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






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






17. A variable that is not explicitly part of a model but affects the way the variables in the model appear to be related






18. Holds information about the same characteristic for many cases






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






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






21. 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






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






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






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






25. The difference between the first and third quartiles






26. The natural tendency of randomly drawn samples to differ






27. 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


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






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






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






31. Sampling schemes that combine several sampling methods






32. An individual about whom or which we have data






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






34. Adding a constant to each data value adds the same constant to the mean - the median - and the quartiles - but does not change the standard deviation or IQR






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






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






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






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






39. A sampling scheme that biases the sample in a way that gives a part of the population less representation than it has in the population






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






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






42. Useful family of models for unimodal - symmetric distributions






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






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






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






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






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






48. Individuals on whom an experiment is performed






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






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