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. _______ is value of the sample statistic which is taken as an approximation of the parameter value
2 / 50
2. Distributions in which there are only one variable are called ___________
3 / 50
3. Given the data, 5, 8, 3, 4, 6, 1. Obtain first non-central moment
4 / 50
4. 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____
5 / 50
5. The difference between the highest observation and the lowest observation is called ________
6 / 50
6. The conjectural statement a postulate, or a proposition about an assumed relationship between two or more variables is known as _____
7 / 50
7. Compute the harmonic mean of 5, 6 and 7
8 / 50
8. 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
9 / 50
9. The first moment about mean is given by [ H_{1}=]
10 / 50
10. Distributions involving two discrete variables are called ________
11 / 50
11. The boundaries separating the items in a given distribution into quarters are called ______
12 / 50
12. Where T.S.S is 172.5 and W.S.S.S is 125.5, B.S.S.S will be ________
13 / 50
13. The following are types of correlation except _________
14 / 50
14. Data collected on a particular variable or set of variables over time is called _________
15 / 50
15. Forecasts that concern the distant future are _______ forecasts
16 / 50
16. Variables that assume any value within an interval or have the property of infinite divisibility are _____ variables
17 / 50
17. 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 _______
18 / 50
18. Quantitative variable can be classified into ________
19 / 50
19. Any characteristics of an object that is capable of assuming different values is called _______
20 / 50
20. The following are measurement scales except ________
21 / 50
21. In simple linear regression, the numbers of unknown constants are ______
22 / 50
22. When the correlation coefficient r, equals zero, then __________
23 / 50
23. Quantitative variable can be classified into _________
24 / 50
24. The measure of dispersion that ensures highest degree of reliability is ___________
25 / 50
25. Variables whose values are whole numbers or integers are called _________
26 / 50
26. Calculate the standard deviation of the date in the table below
27 / 50
27. The difference between the highest observation and the lowest observation is called ________
28 / 50
28. Correlation is used to determine the extent at which the variable are correlated is called_________ correlation
29 / 50
29. Correlation values ranges from _________
30 / 50
30. Variables whose values are fractional and are points on an internal are called _________
31 / 50
31. The second quartile is equivalent to the _________
32 / 50
32. Distributions involving two discrete variables are called __________
33 / 50
33. Hypothesis testing starts with a statement about population parameters such as _________
34 / 50
34. Compute the harmonic mean of 5, 6 and 7
35 / 50
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. The second quartile is equivalent to the __________
37 / 50
37. 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 _________
38 / 50
38. Individual data can also be called ____________ data
39 / 50
39. The boundaries separating the items in a given distribution into quarters are called ________
40 / 50
40. Range of 8, 12, 5, 15 is ______
41 / 50
41. The mathematical method of determined the points estimate of ‘a’ and ‘b’ from the available sample points is called ____ method
42 / 50
42. Calculate the variance of the date in the table below
43 / 50
43. A summary measure that describes any given characteristic of the population is known as a ________
44 / 50
44. ___________ refers to the formula or statistic which has been chosen to provide an estimate of the population value
45 / 50
45. Analysis of Variance (ANOVA) is a test for equality of _____
46 / 50
46. A logical approach used in an investigation to indicate possible alternatives or choices from which an acceptable solution may be derived is called______
47 / 50
47. 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
48 / 50
48. Under coefficient of correlation, When r = 0 i.e. there is ________ relationship
49 / 50
49. Out of all measures of dispersion, the easiest one to calculate is_____
50 / 50
50. The chi-square test is not very effective if the sample is _______
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