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. Collection of information from the whole population






2. Test use normalcdf(ZTS -999)






3. Complement of p






4. Graph involving pictures of objects in which the size of the object in which the size of the object in the picture represents the relative size of the quantity being represented by the object.






5. 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






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






7. _______________ are numerical measurements that can assume any value between two numbers






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






9. Level of measurement- Is like the ordinal level - with the additional property that we can determine meaningful amounts of differences between data. However - there is no inherent (natural) zero starting point (where none of the quantity is present).






10. A survey that includes every item or individual of the population






11. Represents categories - and is nonnumerical in nature






12. _______________ are numerical values that can assume only a limited number of values






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






14. A numerical quantity measuring some aspect of the population






15. Middle value of a set of data values after they've been arranged in numerical order - 1. First arrange data values in numerical order 2. For odd # of data values - the median is the middle data value 3. For even # of data values - the median is the m






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






17. Members of the population select themselves by volunteering






18. Level of measurement- Is the interval level modified to include the inherent zero starting point (where zero indicates that none of the quantity is present). For values at this level - differences and ratios are both meaningful. (Example) Ages of sur






19. Always use a equal symbol






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






21. 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






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






23. _______________ 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






24. Sum of the values






25. Is a sample containing similar characteristics of the population






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






27. A visual exploratory data analysis technique that shows the shape of a distribution - this kind of display uses the actual values of the variable to present the shape of the distribution of data values






28. Mu; population mean






29. Has the same shape and horizontal scale as a histogram - but the vertical scale is marked with relative frequencies instead of actual frequencies






30. 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






31. Capital sigma; summation






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






33. Statistics






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






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






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






37. Sample size or number of trials






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






39. Range - standard deviation and variance.






40. Alternative hypothesis






41. When the distribution of the data values greater than the center of the display - and the data values less than the center of the display are mirror images of each other






42. Is denoted by 'N' - is the number of data values in the population






43. The important aspects of the data are called?






44. Mean - mode - median and midrange.






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






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






47. Population variance






48. Sample variance






49. Standard scores and percentile






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