ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
STT206
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1. The method of least squares dictates that we choose a regression line where the sum of the square of deviations of the points from the line is _______
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2. When the correlation coefficient r, equals zero, then __________
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3. Distributions involving two discrete variables are called ___________
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4. The following are measurement scales except ________
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5. _______ is value of the sample statistic which is taken as an approximation of the parameter value
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6. The chi-square goodness-of-fit test is be used to test for _____
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7. Compute the harmonic mean of 5, 6 and 7
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8. Quantitative variable can be classified into _________
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9. The following are types of correlation except _________
10 / 50
10. The payoffs associated with each possible outcome in a decision problem should be listed in ______ table
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11. The degrees of freedom for the test statistic for μ when σ is unknown is __________
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12. Distributions in which there are only one variable are called ___________
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13. Given the data, 5, 8, 3, 4, 6, 1. Obtain first non-central moment
14 / 50
14. ANOVA means _______
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15. The second quartile is equivalent to the __________
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16. The following are measurement scales except _______
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17. A graphical method of showing correlation between two variables is called ________
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18. Under coefficient of correlation, When r = 0 i.e. there is ________ relationship
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19. A graphical method of showing correlation between two variables is called __________
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20. Quantitative variable can be classified into ________
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21. The difference between the highest observation and the lowest observation is called ________
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22. Forecasts based solely on past and present values of the variable to be forecast is called_______ forecasts
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23. If wale predicts that value of 50kg bag of rice will rise in 2022 based on past year (2016) and present year (2019), wale assumption is based on ____
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24. Variables whose values are whole numbers or integers are called _________
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25. Calculate the standard deviation of the date in the table below
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26. Indicators which reflect the relative changes in the level of certain phenomenon in any given period are ________
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27. Data collected on a particular variable or set of variables over time is called _________
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28. Any characteristics of an object that is capable of assuming different values is called __________
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29. Multiple regression is also known as _____ regression
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30. Compute the harmonic mean of 5, 6 and 7
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31. Correlation values ranges from _________
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32. Where T.S.S is 172.5 and W.S.S.S is 125.5, B.S.S.S will be ________
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33. ___________ refers to the formula or statistic which has been chosen to provide an estimate of the population value
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34. The difference between the highest observation and the lowest observation is called ________
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35. Sampling is simply a process of learning about the __________________ on the basis of a sample drawn from it
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36. When an investigator uses questionnaire to collect data from group of people in a population, such data is called ______data
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37. The values of (xi,yi) are given as (1,2), (2,4), (3,8), (4,7), (5,10), (6,5), (7,14), (8,16), (9,2), (10,20) find the value of summation xi
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38. In simple linear regression, the numbers of unknown constants are ______
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39. Variables whose values are whole numbers or integers are called ________
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40. Purposive samples can be occasionally referred to as ______ samples
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41. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?
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42. Distributions involving two discrete variables are called __________
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43. When the correlation coefficient r, equals zero, then __________
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44. Variables whose values are fractional and are points on an internal are called _________
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45. A graphical method of showing correlation between two variables is called __________
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46. The boundaries separating the items in a given distribution into quarters are called ________
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47. If the points on the scatter diagram show no tendency either to increase together or decrease together the value of r will be close to _______
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48. Classification of data based on sources gives rise to __________
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49. Range of 8, 12, 5, 15 is ______
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50. Distributions involving two discrete variables are called ________
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