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. 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






2. Mean - mode - median and midrange.






3. One extreme value can affect it dramatically.






4. The level of significance and the probability of a type I error (rejecting a true null hypothesis). The area in the tail or tails of a distribution (z - t - or ?2); in hypothesis testing you don't always have a two tailed distribution as in confidenc






5. Population variance






6. 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






7. 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).






8. Collection of information from the whole population






9. _______________ 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






10. Sample proportion






11. Parameter






12. 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


13. Represents categories - and is nonnumerical in nature






14. Population size






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






16. Alternative hypothesis






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






18. Sample variance






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






20. 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






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






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. A collection of individuals about which we want to draw conclusions






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






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






26. 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






27. Collection of information from a sample






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






29. Sample mean






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






31. 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






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






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






34. 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






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






36. Complement of p






37. Always use a equal symbol






38. Test use normalcdf(ZTS -999)






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






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






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






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






43. Sample standard deviation






44. The important aspects of the data are called?






45. 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






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






47. Mu; population mean






48. Information about individuals in a population






49. Population proportion






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