STT206

Category: STT206

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. ANOVA can be classified in ________ ways

2 / 50

2. Distributions involving two discrete variables are called ___________

A. univariate distributions

B. none of the above

C. all of the above

D. bivariate distributions

3 / 50

3. Correlation values ranges from _________

A. -1 to 0

B. -2 to 2

C. 0 to 1

D. -1 to 1

4 / 50

4. The following are types of correlation except _________

A. quadratic

B. negative

C. linear

D. positive

5 / 50

5. The payoffs associated with each possible outcome in a decision problem should be listed in ______ table

6 / 50

6. Given the data, 5, 8, 3, 4, 6, 1. Obtain first non-central moment

A. 4.5

B. 5.2

C. 3.6

D. 2.3

7 / 50

7. Calculate the variance of the date in the table below

A. 0.95

B. 0.54

C. 1.5

D. 0.84

8 / 50

8. Variables whose values are fractional and are points on an internal are called _________

A. whole variables

B. discrete variables

C. continuous variables

D. none of the above

9 / 50

9. The boundaries separating the items in a given distribution into quarters are called ________

A. mean deviation

B. quartiles

C. ranges

D. deviation

10 / 50

10. When the correlation coefficient r, equals zero, then __________

A. there's a perfect correlation

B. there's a linear correlation

C. there's a non-uniform correlation

D. there's no correlation

11 / 50

11. Forecasts that concern the distant future are _______ forecasts

12 / 50

12. The chi-square goodness-of-fit test is be used to test for _____

13 / 50

13. Variables whose values are given as numerical quantities is called _____ variables

14 / 50

14. The second quartile is equivalent to the _________

A. variance

B. standard deviation

C. median

D. mean

15 / 50

15. What is the range of the data 5, 2, 2, 3, 7, 8, 18, 1 ?

A. 15

B. 9

C. 16

D. 17

16 / 50

16. The following are measurement scales except ________

A. interval

B. nomial

C. none of the above

D. ordinal

17 / 50

17. The conjectural statement a postulate, or a proposition about an assumed relationship between two or more variables is known as _____

18 / 50

18. Variables whose values are whole numbers or integers are called _________

A. discrete variable

B. whole variables

C. continuous variables

D. none of the above

19 / 50

19. 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 ____

A. 1000000

B. 540

C. 120

D. 1200000

20 / 50

20. Classification of data based on sources gives rise to __________

A. secondary data

B. all of the above

C. primary data

D. none of the above

21 / 50

21. The following are types of correlation except _________

A. quadratic

B. positive

C. linear

D. negative

22 / 50

22. Individual data can also be called ____________ data

23 / 50

23. Like other quartiles, the median quartile is at what percent mark:_____%

24 / 50

24. Range of 8, 12, 5, 15 is ______

25 / 50

25. Hypothesis testing starts with a statement about population parameters such as _________

26 / 50

26. In null hypothesis for a Chi-square test, both variables are _____

27 / 50

27. Quantitative variable can be classified into ________

A. discrete variable

B. all of the above

C. continuous variable

D. none of the above

28 / 50

28. 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

29 / 50

29. Forecasts concerning the near future are known as ______ forecasts

30 / 50

30. Indicators which reflect the relative changes in the level of certain phenomenon in any given period are ________

31 / 50

31. Compute the harmonic mean of 5, 6 and 7

A. 5,58

B. 3.56

C. 2.57

D. 4.77

32 / 50

32. 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

A. 65

B. 60

C. 55

D. 50

33 / 50

33. Calculate the mean of the date in the table below

A. 2

B. 1.96

C. 1.35

D. 1.55

34 / 50

34. Variables whose values are fractional and are points on an internal are called _________

A. none of the above

B. discrete variables

C. whole variables

D. continuous variables

35 / 50

35. ANOVA means _______

36 / 50

36. A graphical method of showing correlation between two variables is called __________

A. dotted plotting

B. Cartesian diagram

C. scatter diagram

D. none of the above

37 / 50

37. 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

A. 50

B. 65

C. 55

D. 60

38 / 50

38. Distributions in which there are only one variable are called ___________

A. all of the above

B. bivariate distributions

C. univariate distributions

D. none of the above

39 / 50

39. Correlation values ranges from ________

A. -1 to 1

B. -1 to 0

C. -2 to 2

D. 0 to 1

40 / 50

40. In simple linear regression, the numbers of unknown constants are ______

41 / 50

41. 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 _________

A. 1200000

B. 1000000

C. 120

D. 540

42 / 50

42. Compute the harmonic mean of 5, 6 and 7

A. 5,58

B. 4.77

C. 3.56

D. 2.57

43 / 50

43. Data collected on a particular variable or set of variables over time is called _________

A. Panel data

B. Time Series Data

C. null data

D. none of the above

44 / 50

44. Variables whose values are whole numbers or integers are called ________

A. whole variables

B. none of the above

C. continuous variables

D. discrete variable

45 / 50

45. Quantitative variable can be classified into _________

A. all of the above

B. discrete variable

C. none of th e above

D. continuous variable

46 / 50

46. Sampling is simply a process of learning about the __________________ on the basis of a sample drawn from it

47 / 50

47. Method of forecasts used to generate the general picture (or trend) behind a set of data or time series is ______________

48 / 50

48. Distributions in which there are only one variable are called _________

A. bivariate distributions

B. univariate distributions

C. all of the above

D. none of the above

49 / 50

49. The degrees of freedom for the test statistic for μ when σ is unknown is __________

50 / 50

50. The branches of statistics that deals with mutual dependence or inter-relationship of two or more variables is _____

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