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. Variables whose values are whole numbers or integers are called ________
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2. The branches of statistics that deals with mutual dependence or inter-relationship of two or more variables is _____
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3. The conjectural statement a postulate, or a proposition about an assumed relationship between two or more variables is known as _____
4 / 50
4. Distributions involving two discrete variables are called ________
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5. 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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6. A graphical method of showing correlation between two variables is called ________
7 / 50
7. Distributions involving two discrete variables are called ___________
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8. Sampling is simply a process of learning about the __________________ on the basis of a sample drawn from it
9 / 50
9. Forecasts that concern the distant future are _______ forecasts
10 / 50
10. The degree of randomness of selection would depend upon the process of selecting the items from the _________
11 / 50
11. Distributions in which there are only one variable are called __________
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12. The second quartile is equivalent to the __________
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13. 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
14 / 50
14. Correlation values ranges from _________
15 / 50
15. Calculate the variance of the date in the table below
16 / 50
16. Correlation values ranges from ________
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17. 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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18. Out of all measures of dispersion, the easiest one to calculate is_____
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19. Distributions in which there are only one variable are called ___________
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20. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?
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21. 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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22. 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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23. Variables whose values are fractional and are points on an internal are called _________
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24. The following are types of correlation except _________
25 / 50
25. the most common index numbers are _____
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26. The first moment about mean is given by [ H_{1}=]
27 / 50
27. Like other quartiles, the median quartile is at what percent mark:_____%
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28. Calculate the mean of the date in the table below
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29. The mathematical method of determined the points estimate of ‘a’ and ‘b’ from the available sample points is called ____ method
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30. The difference between the highest observation and the lowest observation is called ________
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31. The chi-square goodness-of-fit test is be used to test for _____
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32. Classification of data based on sources gives rise to __________
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33. Housing unit, number of students in a class, number of goals scored and number of cars are examples of ______ variable
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34. Individual data can also be called ____________ data
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35. The boundaries separating the items in a given distribution into quarters are called ______
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36. Forecasts concerning the near future are known as ______ forecasts
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37. Multiple regression is also known as _____ regression
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38. 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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39. Under correlation coefficient, When r = +1, there is a ________linear relationship
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40. Any characteristics of an object that is capable of assuming different values is called __________
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41. Data collected from CBN website are called ________ data
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42. Calculate the standard deviation of the date in the table below
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43. The second quartile is equivalent to the _________
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44. _______ is value of the sample statistic which is taken as an approximation of the parameter value
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45. Hypothesis testing starts with a statement about population parameters such as _________
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46. A summary measure that describes any given characteristic of the population is known as a ________
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47. Correlation is used to determine the extent at which the variable are correlated is called_________ correlation
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48. The following are measurement scales except _______
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49. Distributions in which there are only one variable are called _________
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50. The degrees of freedom for the test statistic for μ when σ is unknown is __________
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