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






2. 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






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






4. Is a number that describes a characteristic of a sample

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






6. 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).






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






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






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






10. Alternative hypothesis






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






12. The important aspects of the data are called?






13. A numerical quantity measuring some aspect of the population






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






15. Standard scores and percentile






16. Test use normalcdf(ZTS -999)






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






18. Sample mean






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






20. Collection of information from a sample






21. Sum of the values






22. The number of times each data value occurs






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






24. Population proportion






25. Sample standard deviation






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






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






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






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






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






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






33. 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






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






35. Population variance






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






37. Represents categories - and is nonnumerical in nature






38. Parameter






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






40. Information about individuals in a population






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






42. _______________ 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






43. 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






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






45. Mean - mode - median and midrange.






46. Capital sigma; summation






47. 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






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






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






50. Range - standard deviation and variance.







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Can you answer 50 questions in 15 minutes?


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