Test your basic knowledge |

DSST Intro To Statistics

Subjects : dsst, statistics
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. Data values that are either much larger or much smaller than the general body of data- they should be included in an analysis unless they are the result of human or other error






2. Sample standard deviation






3. Is a number that describes a characteristic of a sample

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


4. Statistics






5. A method of data collection where the researcher selects a sample from the population and measures the variable of interest






6. A quantity calculated from data gathered from a sample- usually used to estimate a population parameter






7. Type of bar graph that shows frequency distributions






8. The important aspects of the data are called?






9. A flaw in the sampling procedure that makes it more likely that the sample will NOT be representative of population






10. To find the range subtract the lowest value by the highest value.






11. A numerical quantity measuring some aspect of the population






12. Lowercase sigma; population standard deviaition






13. Is a collection of several data pertaining to one or more variables






14. Range - standard deviation and variance.






15. An efficient method of graphing information using actual amounts: clusters - gaps - outliers are clearly identified.






16. Uses numerical and or visual techniques to summarize or describe the data in a clear effective manner






17. For a left tailed test use normalcdf(-999 - ZTS)






18. Type of information - usually a property of characteristic of a person or thing that is measured or observed






19. Type II error is measured






20. Is denoted by 'n' - is the number of data values in the sample






21. Mu; population mean






22. Variable where the value is a number that results from a measurement process - also called numerical data






23. Collection of information from the whole population






24. The number of times each data value occurs






25. Disjoint events cannot overlap. They are mutually exclusive if they cannot occur at the same time.






26. Can be used to get an initial graphical view of data






27. A sample which is selected in such a manner - that each data value of the population has a non-zero probability of being selected for the sample






28. Is the portion of the population that is selected for study






29. Is a sample of data values selected from a population in such a way that every sample of size 'n' has an equal probability of being selected and every data value of the population has the same chance of being selected for the sample






30. Mean - mode - median and midrange.






31. Population variance






32. When the distribution of the data values tend to be concentrated toward one end of the display or tail of the distribution - while the data values in the other tail are spread out through extreme values resulting in a longer tail






33. To calculate the percentile take the number of values less than x - divide by total number of values and times by 100.






34. Level of measurement- involves data that consist of names - labels and categories only. The data cannot be arranged in an ordering scheme (such as low to high). (Example) Nationalities of survey respondents






35. Double the answer from step 1 or step 2 (on whichever side your test statistics falls).






36. An individual data value which lies far (above or below) from most or all of the other data values within a distribution






37. Test use normalcdf(ZTS -999)






38. Population is organized into groups (i.e - neighborhoods/departments) - and sampling unit is selected by a simple random sample






39. Occur when one of them affects the probability of the other.






40. Collection of information from a sample






41. To divide the population into 2 or more non-overlapping subsets called strata






42. Is a sample containing similar characteristics of the population






43. A subset of the population- it's important to choose a sample at random to avoid bias in the results






44. Occur when one does not affect the probability of the occurrence of the other.






45. A method of experimentation in which you can control as many variables as possible in order to isolate the effects of a response variable






46. Is the process of selecting a portion - or sample - of the entire population






47. Using graphs and numerical summaries to describe variables in a data set and their relationship






48. A method of data collection in which the objects of study are observed in their natural settings and the variables are recorded






49. _______________ of a numerical variable represents the data values of the variable from the lowest to the highest value along with the number of times each data value occurs






50. Is a number that describes a characteristic of a population