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. Indicators which reflect the relative changes in the level of certain phenomenon in any given period are ________
2 / 50
2. Method of forecasts used to generate the general picture (or trend) behind a set of data or time series is ______________
3 / 50
3. The following are types of correlation except _________
4 / 50
4. The difference between the highest observation and the lowest observation is called ________
5 / 50
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 ____
6 / 50
6. Data collected on a particular variable or set of variables over time is called _________
7 / 50
7. In simple linear regression, the numbers of unknown constants are ______
8 / 50
8. Quantitative variable can be classified into ________
9 / 50
9. Multiple regression is also known as _____ regression
10 / 50
10. Forecasts that concern the distant future are _______ forecasts
11 / 50
11. 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
12 / 50
12. _____________________ provides various types of statistical information of either Qualitative or quantitative nature
13 / 50
13. Calculate the variance of the date in the table below
14 / 50
14. The boundaries separating the items in a given distribution into quarters are called ________
15 / 50
15. 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 _______
16 / 50
16. Under correlation coefficient, When r = +1, there is a ________linear relationship
17 / 50
17. Where T.S.S is 172.5 and W.S.S.S is 125.5, B.S.S.S will be ________
18 / 50
18. Correlation values ranges from ________
19 / 50
19. Variables whose values are whole numbers or integers are called ________
20 / 50
20. 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
21 / 50
21. Variables whose values are fractional and are points on an internal are called _________
22 / 50
22. ___________ refers to the formula or statistic which has been chosen to provide an estimate of the population value
23 / 50
23. ANOVA means _______
24 / 50
24. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?
25 / 50
25. Out of all measures of dispersion, the easiest one to calculate is_____
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26. Forecasts based solely on past and present values of the variable to be forecast is called_______ forecasts
27 / 50
27. Distributions in which there are only one variable are called ___________
28 / 50
28. The chi-square goodness-of-fit test is be used to test for _____
29 / 50
29. A graphical method of showing correlation between two variables is called __________
30 / 50
30. 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
31 / 50
31. Classification of data based on sources gives rise to __________
32 / 50
32. Compute the harmonic mean of 5, 6 and 7
33 / 50
33. 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
34 / 50
34. Analysis of Variance (ANOVA) is a test for equality of _____
35 / 50
35. The degrees of freedom for the test statistic for μ when σ is unknown is __________
36 / 50
36. The measure of the degree of uniformity of observations in a given set of data can be said to be _____
37 / 50
37. Range of 8, 12, 5, 15 is ______
38 / 50
38. Variables whose values are given as numerical quantities is called _____ variables
39 / 50
39. Variables whose values are whole numbers or integers are called _________
40 / 50
40. Like other quartiles, the median quartile is at what percent mark:_____%
41 / 50
41. Individual data can also be called ____________ data
42 / 50
42. The boundaries separating the items in a given distribution into quarters are called ______
43 / 50
43. 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 _______
44 / 50
44. Any characteristics of an object that is capable of assuming different values is called __________
45 / 50
45. A summary measure that describes any given characteristic of the population is known as a ________
46 / 50
46. Correlation values ranges from _________
47 / 50
47. Distributions involving two discrete variables are called ________
48 / 50
48. The degree of randomness of selection would depend upon the process of selecting the items from the _________
49 / 50
49. _______ is value of the sample statistic which is taken as an approximation of the parameter value
50 / 50
50. The measure of dispersion that ensures highest degree of reliability is ___________
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