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. 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.






2. Sample proportion






3. Is a sample containing similar characteristics of the population






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






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






6. Members of the population select themselves by volunteering






7. Null hypothesis






8. _______________ 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






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






10. Alternative hypothesis






11. Probability of event A






12. Mu; population mean






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






14. Collection of information from the whole population






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






16. Always use a equal symbol






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






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






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






20. 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


21. Capital sigma; summation






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






23. One extreme value can affect it dramatically.






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






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






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






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






28. Complement of p






29. 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






30. 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






31. Standard scores and percentile






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






33. Sample variance






34. 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






35. Represents categories - and is nonnumerical in nature






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






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






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






39. Type of bar graph that shows frequency distributions






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






41. 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






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






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






44. The pattern of variation of data. The distribution may be described as symmetrical - positively skewed - or negatively skewed






45. Test use normalcdf(ZTS -999)






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






47. 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






48. A numerical quantity measuring some aspect of the population






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






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