Probability and Statistics By Robert A. Crovelli1 Open ...
U.S. DEPARTMENT OF THE INTERIOR
U.S. GEOLOGICAL SURVEY
Probability and Statistics
for
Petroleum Resource Assessment
By
Robert A. Crovelli1
Open-File Report 93-582
This report is preliminary and has not been reviewed for conformity with U.S.
Geological Survey editorial standards. Any use of trade, product or firm names is for
descriptive purposes only and does not imply endorsement by the U.S. Government.
!U.S. Geological Survey, Box 25046, MS 971, DFC, Denver, Colorado 80225
1993
TABLE OF CONTENTS
I.
Venn diagram for describing the fields of probability and statistics ................
The relationship between probability and inferential statistics.........................
Probability..................................................................................................................
A. Basic Concepts....................................................................................................
1. Petroleum accumulation classification hierarchy...................................
2. Experiment, sample space, and event.......................................................
3. Venn diagram...............................................................................................
4. Tree diagram.................................................................................................
5. Event relations..............................................................................................
6. Combinatorial analysis (counting techniques)........................................
7. Definitions of probability............................................................................
8. Probability of event relations.....................................................................
9. Conditional probability...............................................................................
10. Probability rules...........................................................................................
11. Applications of probability rules...............................................................
12. Bayes1 rule.....................................................................................................
Page
1
2
3
4
4
5
6
6
7
8
9
11
12
13
14
18
B. Random Variables and Probability Distributions.........................................
1. Discrete random variables..........................................................................
2. Discrete probability distributions..............................................................
3. Graphs of discrete probability distributions............................................
4. Continuous random variables ...................................................................
5. Continuous probability distributions.......................................................
6. Graphs of continuous probability distributions......................................
7. General graphs of continuous probability distributions........................
8. Monte Carlo simulation..............................................................................
19
19
20
21
22
23
24
25
26
C. Descriptive Parameters.....................................................................................
1. Measures of central location.......................................................................
a. Mean........................................................................................................
b. Median.....................................................................................................
c. Mode........................................................................................................
2. Mean, median, and mode related to skewness .......................................
3. Measures of variation..................................................................................
a. Variance...................................................................................................
b. Standard deviation................................................................................
4. Fractiles..........................................................................................................
5. Examples.......................................................................................................
6. LOGRAF........................................................................................................
29
29
29
30
31
32
33
33
34
35
36
39
D. Some Continuous Probability Distributions..................................................
1. Normal distribution.....................................................................................
2. PROBDIST model selection menu.............................................................
3. 7-fractile probability histogram.................................................................
4. 3-fractile probability histogram.................................................................
44
44
45
46
47
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
H.
Normal distribution (minimum/maxiinum)...........................................
Normal distribution (mean/standard deviation)...................................
Truncated normal distribution..................................................................
Lognormal distribution...............................................................................
Truncated lognormal distribution.............................................................
Exponential distribution.............................................................................
Truncated exponential distribution ..........................................................
Pareto distribution.......................................................................................
Truncated Pareto distribution....................................................................
Uniform distribution...................................................................................
Triangular distribution ...............................................................................
48
49
50
51
52
53
54
55
56
57
58
Statistics ..................................................................................................................
A. Sampling Concepts............................................................................................
1. Populations...................................................................................................
2. Parameters....................................................................................................
3. Samples..........................................................................................................
4. Sampling techniques ...................................................................................
5. Statistics.........................................................................................................
59
60
60
62
64
69
71
B. Descriptive Statistics..........................................................................................
1. Tabular methods..........................................................................................
a. Frequency distribution..........................................................................
b. Relative frequency distribution...........................................................
c. Cumulative frequency distribution (less than)..................................
d. Relative cumulative frequency distribution (less than)...................
e. Cumulative frequency distribution (more than)...............................
f. Relative cumulative frequency distribution (more than).................
2. Pictorial methods.........................................................................................
a. Frequency histogram.............................................................................
b. Relative frequency histogram..............................................................
c. Cumulative frequency polygon (less than)........................................
d. Relative cumulative frequency polygon (less than).........................
e. Cumulative frequency polygon (more than).....................................
f. Relative cumulative frequency polygon (more than).......................
3. Measures of central location.......................................................................
a. Sample mean ..........................................................................................
b. Sample median.......................................................................................
c. Sample mode..........................................................................................
4. Measures of variation..................................................................................
a. Sample variance.....................................................................................
73
73
73
74
75
76
77
78
79
79
80
81
82
83
84
85
85
86
87
88
88
b. Sample standard deviation...................................................................
89
c. Sample range..........................................................................................
90
C. Sampling Distributions.....................................................................................
1. Sampling distribution of the mean............................................................
2. Central Limit Theorem................................................................................
3. Normal probability paper...........................................................................
91
91
93
96
ii
D. Inferential Statistics ...........................................................................................
1. Statistical estimation....................................................................................
a. Point estimation.....................................................................................
b. Interval estimation.................................................................................
2. Tests of hypotheses......................................................................................
a. Z test for p................................................................................................
b. Chi-squared goodness-of-fit test..........................................................
c. Lognormal probability paper...............................................................
3. Regression and correlation.........................................................................
a. formulas..................................................................................................
b. Transformations.....................................................................................
c. Finding-rate curves................................................................................
d. Power laws..............................................................................................
e. Fractals.....................................................................................................
98
100
100
103
104
104
106
108
Ill
Ill
113
119
123
125
Selected References............................................................................................................
Appendix: Tables..............................................................................................................
A.I. Areas under the normal curve................................................................................
A.2. Critical values of the chi-squared distribution.....................................................
Index.....................................................................................................................................
130
132
132
134
136
111
Operations Research
Probability Models
Stochastic Processes
Markov Chains
Queuing Theory
Simulation
Game Theory
Probability
Decision Theory
Theory
Risk Analysis
Dynamic Programming
Reliability Theory
Combinatorial Analysis
Time Series Analysis
Actuarial Analysis
Random Walks
AREAS
Probability
Basic
Probability
Statistical
Theory
Statistical Inference
Estimation Theory
Tests of Hypotheses
Regression & Correlation
(Simple & Multiple)
Analysis of Variance
Design of Experiments
Sampling Techniques
Sample Surveys
Nonparametric Statistics
Multivariate Statistics
Factor Analysis
Discriminate Analysis
Quality Control
Descriptive Statistics
Bayesian Statistics
Geostatistics
AREAS
Statistics
Venn Diagram for Describing the Fields of Probability and Statistics
................
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