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. Involves the procedures associated with the data collection process - the summarizing and interpretation of data - and the drawing of inferences or conclusions based on the analysis of the data






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






3. A method in which you randomly choose one number from 'l' to 'k' and continue to select the kth element






4. Lowercase sigma; population standard deviaition






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






6. The number of times each data value occurs






7. Sample proportion






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






9. Square the standard deviation and to find the population variance square of the population standard deviation






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






11. Complement of p






12. 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






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






14. 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






15. One extreme value can affect it dramatically.






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






17. Create a sample by using data from population members that are readily available






18. Is a sample that has the pertinent characteristics of the population in the same proportion - as they are included in that population






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






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






21. Mu; population mean






22. 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






23. Mean - mode - median and midrange.






24. Before they are arranged or analyzed - information or observations are called________.






25. 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






26. 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.






27. A method in which each combination of people has an equal chance of being selected- the sample is representative of the population and is independent






28. 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






29. Sum of the values






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






31. Parameter






32. Collection of information from a sample






33. Level of measurement- Involves data that may be arranged in some order - but differences between data values either cannot be determined or are meaningless. (Example) Questions on a survey are scored with integers 1 thru 5 with 1 representing strong






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






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






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






37. Sample size or number of trials






38. A numerical quantity measuring some aspect of the population






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






40. 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






41. Always use a equal symbol






42. 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






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






44. A number that is used to describe a characteristic of a sample - such as a sample average - is called a __________.






45. Test use normalcdf(ZTS -999)






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






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






48. Is the entire collection of all individuals or objects of interest






49. The important aspects of the data are called?






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