1. "one in each thousand human beings (0.001) of all individuals are inflamed with HIV (H)
- supply equasion - ANS-P(H) = .001
2. A dotplot - ANS-Is another form of display used to summarize a quantitative variable
graphically.
3. A histogram is a display of - ANS-a single quantitative variable
4. A left skewed distribution - ANS-Has a tail which curves as much as the left.
5. A poor scatterplot - ANS-moves downward and comparatively straight
6. a neither superb or poor scatter plot can take on any range bureaucracy, even a U -
ANS-can tackle any quantity of bureaucracy, even a U form
7. A pie chart is a show for - ANS-visualizing the distribution of categorical facts
8. a effective scatter plot - ANS-moves upward and relatively immediately
9. A right skew distribution - ANS-has a tail that curves down to the right
10. A scatterplot compares - ANS-two quantitative variables
11. A scatterplot is a show of - ANS- quantitative variables
12. A way table compares - ANS- groups of specific records
13. A manner table is a show of - ANS-the relationship of two variables which are both
categorical
14. common of the squared deviations - ANS-variance
15. Boxplots are most beneficial whilst provided - ANS-aspect-with the aid of-aspect to
compare and comparison distributions from two or extra agencies.
16. By distribution of a variable, we mean - ANS-what values the variable takes and the way
regularly the variable takes those values
17. Can skewed distribution be bimodal? - ANS-yes
18. Equation for figuring out an outlier - ANS-1.5(IQR) = quantity brought to Q3 or
Subtracted from Q1
19. equation for imply - ANS-a+b+c/three (The denominator is constantly the wide variety of
variables introduced
20. For a boxplot, the median describes the center, and the extremes (which provide the
variety) and - ANS-the quartiles (which provide the IQR) describe the spread.
21. For r, a correlation
22. much less than zero.Five is commonly described as - ANS-
23. For r, a correlation extra than zero.Eight is generally described as - ANS-robust
24. For r, ideal correlation of ± 1 occurs handiest when - ANS-he facts points all lie exactly
on a
25. instantly line. If r = +1, the slope of this line is effective. If r = -1, the slope of this
26. line is terrible.
27. How do we build a two-manner desk of probabilities? - ANS-Horizontally, A, no longer A
and total, Vertically, B. Now not B and general
, 28. How does one calculate the standard deviation? - ANS-Square each of the deviations:
then,Average the square deviations by means of including them up, and dividing via n -
1, (one less than the pattern size):
29. If A and B are disjoint events - - ANS-P(A and B)= zero
30. If A and B are two impartial activities (Multiplication Rule) - ANS-P(A and B) = P(A) *
P(B).
31. If A and B Disjoint - ANS-A and B can't be indepentdent
32. if A, B and C are three unbiased activities, - ANS-P(A and B and C) = P(A) * P(B) * P(C)
33. IF individual is HIV superb and take a look at accuracy is .Ninety five, what are the
probabilities that that man or woman will take a look at terrible (give equation) -
ANS-P(now not H) = 1 - .Ninety five = .05.
34. If someone absolutely has HIV, the possibility of checking out fine is .Ninety five" (H)
supply H) = .Ninety five
35. In a probability tree, overall opportunity of V, in the event of C or now not C is determined
via what series of equasions? - ANS-Applying the Addition Rule for Disjoint Events,
we've got
36.
37. P(V) = P(C and V) + P(no longer C and V).
38.
39. Applying the General Multiplication Rule to every time period, we've
40.
41. P(V) = P(C) * P(V now not C) * P(V not C)
42. In a opportunity tree, symbolically, V = (C and V) or (not C and V). Thus, the general
probability of taking the vacation is - ANS-P(V) = P( (C and V) or (not C and V) ).
43. In a possibility tree, the probabilities in the first branch-off are - ANS-non-conditional
chances
44. In a possibility tree, the second one aspect to notice is that chances of branches that
department out from the identical factor continually add as much as - ANS-one
45. In a probability tree,2d department-off are - ANS-conditional chances.
46. In a two-manner table of probabilities, what is the total of all consequences (decrease
right corner?) - ANS-1
47. In case C→C we in comparison - ANS-distributions of the explicit response.
48. In case C→Q we compared - ANS-distributions of the quantitative response.
49. In general, some other method for checking the independence of activities A and B is to
evaluate - ANS-P(A and B) to P(A) * P(B). If the two are same, then A and B are
independent, otherwise the 2 aren't independent.
50. In chance, "OR" means either one or the alternative or each. - ANS-P(A or B) =
P(occasion A takes place or occasion B happens or both arise)
51. In stemplots, - ANS-the leaf is the proper-maximum digit
52. IQR = (Interquartile Range) - ANS-Q3-Q1 (Median of the third quartile minus the median
of the second one quartile
53. Median - ANS-The midpoint of a distribution
54. Mode - ANS-the maximum usually occurinng price in a dataset
55. Negative correlation: (r) - ANS-If x and y have a strong bad linear correlation, r is close
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