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






2. Members of the population select themselves by volunteering






3. Population size






4. A numerical quantity measuring some aspect of the population






5. Population variance






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






7. Always use a equal symbol






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






9. Sample variance






10. Sum of the values






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






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






13. 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






14. Represents categories - and is nonnumerical in nature






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






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






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






18. The number of times each data value occurs






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






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






21. 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.






22. Mean - mode - median and midrange.






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






24. Parameter






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






26. Collection of information from a sample






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






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






29. Collection of information from the whole population






30. Type II error is measured






31. Statistics






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






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






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






36. 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






37. 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






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






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






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






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






42. Alternative hypothesis






43. 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






44. _______________ 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






45. Complement of p






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






47. Sample size or number of trials






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






49. Is a sample containing similar characteristics of the population






50. Is a number that describes a characteristic of a population