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
1 / 50
1. Forecasts that concern the distant future are _______ forecasts
2 / 50
2. Range of 8, 12, 5, 15 is ______
3 / 50
3. Calculate the standard deviation of the date in the table below
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4. The mathematical method of determined the points estimate of ‘a’ and ‘b’ from the available sample points is called ____ method
5 / 50
5. Data collected on a particular variable or set of variables over time is called _________
6 / 50
6. Distributions involving two discrete variables are called __________
7 / 50
7. Variables whose values are given as numerical quantities is called _____ variables
8 / 50
8. Under coefficient of correlation, When r = 0 i.e. there is ________ relationship
9 / 50
9. Data which are collected by someone else or some organization either in published or unpublished forms is called ________ data
10 / 50
10. The boundaries separating the items in a given distribution into quarters are called ________
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11. Where T.S.S is 172.5 and W.S.S.S is 125.5, B.S.S.S will be ________
12 / 50
12. Distributions involving two discrete variables are called ________
13 / 50
13. Correlation values ranges from ________
14 / 50
14. The degrees of freedom for the test statistic for μ when σ is unknown is __________
15 / 50
15. Distributions involving two discrete variables are called ___________
16 / 50
16. Analysis of Variance (ANOVA) is a test for equality of _____
17 / 50
17. Classification of data based on sources gives rise to __________
18 / 50
18. Forecasts based solely on past and present values of the variable to be forecast is called_______ forecasts
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19. 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____
20 / 50
20. Individual data can also be called ____________ data
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21. The first moment about mean is given by [ H_{1}=]
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22. 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
23 / 50
23. The second quartile is equivalent to the __________
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24. A summary measure that describes any given characteristic of the population is known as a ________
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25. 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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26. The payoffs associated with each possible outcome in a decision problem should be listed in ______ table
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27. the most common index numbers are _____
28 / 50
28. 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
29 / 50
29. A graphical method of showing correlation between two variables is called ________
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30. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?
31 / 50
31. Variables whose values are fractional and are points on an internal are called _________
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32. Purposive samples can be occasionally referred to as ______ samples
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33. Method of forecasts used to generate the general picture (or trend) behind a set of data or time series is ______________
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34. The following are types of correlation except _________
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35. A method that involves conference techniques by which a group of people attempts to find solution for specified problems is known as _______
36 / 50
36. 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 ____
37 / 50
37. The following are types of correlation except _________
38 / 50
38. 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 _______
39 / 50
39. The second quartile is equivalent to the _________
40 / 50
40. A graphical method of showing correlation between two variables is called __________
41 / 50
41. When the correlation coefficient r, equals zero, then __________
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42. In simple linear regression, the numbers of unknown constants are ______
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43. When the correlation coefficient r, equals zero, then __________
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44. _______ is value of the sample statistic which is taken as an approximation of the parameter value
45 / 50
45. Variables whose values are fractional and are points on an internal are called _________
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46. The conjectural statement a postulate, or a proposition about an assumed relationship between two or more variables is known as _____
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47. Variables whose values are whole numbers or integers are called _________
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48. Distributions in which there are only one variable are called _________
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49. 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
50 / 50
50. Calculate the variance of the date in the table below
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