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. Scale that has all the properties of the nominal, ordinal and interval scales including the additional property of having an absolute zero point is known as ____ scale
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2. When the correlation coefficient r, equals zero, then __________
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3. 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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4. Individual data can also be called ____________ data
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5. When the correlation coefficient r, equals zero, then __________
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6. Variables that assume any value within an interval or have the property of infinite divisibility are _____ variables
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7. Variables whose values are fractional and are points on an internal are called _________
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8. The first moment about mean is given by [ H_{1}=]
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9. A graphical method of showing correlation between two variables is called ________
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10. Distributions involving two discrete variables are called __________
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11. The following are types of correlation except _________
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12. Consider a set of data on monthly sales of a company’s product, the mean of which was found to be N240,000; the mode found to be N135,000; and the standard deviation found to be N85,000. The Pearson’s No. 1 Coefficient of skewness would be____
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13. Range of 8, 12, 5, 15 is ______
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14. The boundaries separating the items in a given distribution into quarters are called ______
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15. Classification of data based on sources gives rise to __________
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16. Like other quartiles, the median quartile is at what percent mark:_____%
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17. Any characteristics of an object that is capable of assuming different values is called __________
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18. Forecasts that concern the distant future are _______ forecasts
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19. The degrees of freedom for the test statistic for μ when σ is unknown is __________
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20. The payoffs associated with each possible outcome in a decision problem should be listed in ______ table
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21. Distributions in which there are only one variable are called ___________
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22. The difference between the highest observation and the lowest observation is called ________
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23. Under coefficient of correlation, When r = 0 i.e. there is ________ relationship
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24. In simple linear regression, the numbers of unknown constants are ______
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25. Analysis of Variance (ANOVA) is a test for equality of _____
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26. The branches of statistics that deals with mutual dependence or inter-relationship of two or more variables is _____
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27. Distributions in which there are only one variable are called __________
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28. Under correlation coefficient, When r = +1, there is a ________linear relationship
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29. 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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30. The boundaries separating the items in a given distribution into quarters are called ________
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31. Quantitative variable can be classified into _________
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32. Consider a set of data on monthly sales of a company�??s product, the mean of which was found to be N240,000; the mode found to be N135,000; and the standard deviation found to be N85,000. Calculate Coefficient of skewness
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33. Forecasts concerning the near future are known as ______ forecasts
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34. The degree of randomness of selection would depend upon the process of selecting the items from the _________
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35. The following are types of correlation except _________
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36. A summary measure that describes any given characteristic of the population is known as a ________
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37. Variables whose values are whole numbers or integers are called ________
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38. A graphical method of showing correlation between two variables is called __________
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39. Distributions involving two discrete variables are called ___________
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40. Calculate the standard deviation of the date in the table below
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41. The second quartile is equivalent to the __________
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42. The difference between the highest observation and the lowest observation is called ________
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43. 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 yi
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44. Calculate the variance of the date in the table below
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45. Distributions involving two discrete variables are called ________
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46. Calculate the mean of the date in the table below
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47. A bus starts with 6 people and stops at 10 different stops, how many different ways can the 6 people depart if any passenger can depart at any bus stop ____
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48. Variables whose values are fractional and are points on an internal are called _________
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49. Compute the harmonic mean of 5, 6 and 7
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50. Multiple regression is also known as _____ regression
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