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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. Sum of the values






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






3. Probability of event A






4. Population proportion






5. Parameter






6. Statistics






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






8. Sample standard deviation






9. A descriptive tool used to visually describe the characteristics and relationships of collections of data quickly and attractively






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






11. 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






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






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






14. Standard scores and percentile






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






16. 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






17. Mu; population mean






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






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






20. Test use normalcdf(ZTS -999)






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






22. The variable value can be represented as isolated points on a number line






23. The important aspects of the data are called?






24. Collection of information from a sample






25. (largest data value) - (smallest data value)






26. Sample variance






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






28. 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






29. 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






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






31. 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






32. Always use a equal symbol






33. Type II error is measured






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






35. Type of bar graph that shows frequency distributions






36. 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






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






38. Alternative hypothesis






39. 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






40. A numerical quantity measuring some aspect of the population






41. Sample proportion






42. 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






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






44. Is the process of using SAMPLE INFORMATION to draw inferences or conclusions about the POPULATION






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






46. Population size






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






48. Sample size or number of trials






49. 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).






50. Determine the location of the middle value of all the data values