Set Theory, Logic, Probability, Statistics Forum

Join experts in discussion on Set Theory, Logic, Probability, Statistics topics. Fundamentals in Set theory, logic and proofs. Probability and statistics also. Homework help is available.

Threads

Graduate Verify and Explain Binomial R.V. Identities

  • knowLittle
  • · Replies 11 ·
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Undergrad Average of standard deviation makes sense?

  • xeon123
  • · Replies 6 ·
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6

Graduate Induction Method: Applying to Any Group or Subgroup?

  • moont14263
  • · Replies 2 ·
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2

Graduate Measurability of random variables

  • the4thamigo_uk
  • · Replies 13 ·
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13

Undergrad How to choose a ranking method for ratios with varying ranges

  • StatsForLife
  • · Replies 10 ·
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10

Undergrad Normal distribution vs.exponential

  • Mark J.
  • · Replies 5 ·
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5

Undergrad Normal distribution assumption

  • luckyluke
  • · Replies 5 ·
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3

Proof about branching process Xn and offspring PGF F(s)

  • Tranquillity
  • · Replies 6 ·
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6

Graduate Murder case Conditional probability

  • dede4metal
  • · Replies 3 ·
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3

Poisson Distribution: Prob of <=3 Wrong Connections in Building

  • Punch
  • · Replies 1 ·
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1

Undergrad I need a formula, if one exists.

  • Tups
  • · Replies 2 ·
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2

Graduate Interpretation of Confidence Intervals and the like

  • MadRocketSci2
  • · Replies 4 ·
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4

Graduate Why is a monoid described as a one-object category if its elements are arrows?

  • byron.hawkins
  • · Replies 2 ·
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Graduate Probability density function and eulers constant

  • mikedamike
  • · Replies 10 ·
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10

High School How can I visualize this data?

  • DaveC426913
  • · Replies 10 ·
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10

Undergrad Understanding Normalization in Gaussian Inputs

  • zak8000
  • · Replies 2 ·
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2

Undergrad Did I just create a coin tossing paradox?

  • cgskook
  • · Replies 5 ·
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5

Undergrad How Do You Calculate Mean and Median from a Joint Distribution Table?

  • Economics2012
  • · Replies 7 ·
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7

Undergrad Survey with dynamic question selection

  • GiTS
  • · Replies 3 ·
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3

Graduate How can background be separated from 1D data with data smoothing/filtering?

  • SuchMuch
  • · Replies 6 ·
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6

Undergrad Probability that an exact copy of something can exist in a very large universe

  • zachfoltz
  • · Replies 1 ·
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1

Undergrad Why does a lower p-value count as stronger evidence against the null hypothesis?

  • sodium.dioxid
  • · Replies 4 ·
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4

Undergrad Why square deviations in variance instead of using absolute values

  • vanmaiden
  • · Replies 1 ·
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1

Graduate Totally ordered partition of a set

  • jason17349
  • · Replies 1 ·
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1

Graduate R-Squared Difference when Dependent variable is $/lb vs Total Dollars?

  • stats1322
  • · Replies 1 ·
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1

Undergrad Significant figures and uncertainty

  • Miffymycat
  • · Replies 2 ·
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2

David's question from Yahoo Answers

  • CaptainBlack
  • · Replies 1 ·
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1

Graduate Dimension of an intersection between a random subspace and a fixed subspace

  • Petawa
  • · Replies 4 ·
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4

Undergrad What is the product of these two probabilities

  • mcknia07
  • · Replies 18 ·
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18

Graduate Adiabatic approximation for joint probability distribution

  • nigels
  • · Replies 2 ·
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2

Graduate Graph Theory - Connectivity of r-regular graphs

  • Gh0stZA
  • · Replies 1 ·
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1

Undergrad Can the choice of codomain affect the surjectivity of a function?

  • dijkarte
  • · Replies 4 ·
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4

What is the number of blue balls in the second urn?

  • Houdini1
  • · Replies 2 ·
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2

Undergrad Conditional Probability on Intermediate Event

  • 3.141592654
  • · Replies 4 ·
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4

Graduate 'Low Level' Error Terms in Expected Mean Square Calculation

  • 3.141592654
  • · Replies 1 ·
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Distribution of sum of discrete random variable

  • Tosh5457
  • · Replies 15 ·
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15

Graduate What Is the Distribution of the First Failure Time for Two Independent Machines?

  • topgun08
  • · Replies 3 ·
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3

Graduate What Is the Relationship Between the Expected Value of Y and X?

  • giglamesh
  • · Replies 8 ·
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8

Graduate What does the set notation in the weak q-norm definition mean?

  • PhillipKP
  • · Replies 2 ·
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2

Graduate Problem related to the compound Poisson process (?)

  • gabe_rosser
  • · Replies 2 ·
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2

Sum of 4 integers divisible by 4.

  • caffeinemachine
  • · Replies 9 ·
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9

Graduate Random Variables - Distribution and Expectations

  • topgun08
  • · Replies 1 ·
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1

Graduate Calculating Poisson Uncertainties with Changing Observation Durations

  • kop442000
  • · Replies 1 ·
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1

Undergrad Is Pr[X1<x]<Pr[X2<x] when X1<X2 and x>0?

  • EngWiPy
  • · Replies 4 ·
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4

Graduate How Do You Find the PDF of Z and Calculate Mean and Variance Using MGF?

  • silkdigital
  • · Replies 3 ·
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3

Probability that exactly one of three events will occur

  • alexmahone
  • · Replies 1 ·
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1

High School Meaning of calculating the mean

  • King
  • · Replies 4 ·
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4

Undergrad Finding R-squared from correlation coefficient and descriptive statistics

  • scolty
  • · Replies 3 ·
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3

Undergrad Simplify the proposition (p→q) ∨ ((¬q→r) ∧ (¬r→¬p))

  • shanshayan
  • · Replies 2 ·
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2

High School How to Select a Simple Random Sample of Employees Using a List of Numbers?

  • Larrytsai
  • · Replies 2 ·
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2

Graduate Delta method fails. Any suggestions how to calculate E(Y)?

  • Hejdun
  • · Replies 9 ·
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9

Graduate Eugene Wigner's take on math's role in the natural sciences #1

  • absurdist
  • · Replies 7 ·
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7

Graduate Combining Probability Estimates for Event Prediction

  • BBITA
  • · Replies 5 ·
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5

Probability that n people in 2n seats have no adjacent pairs

  • alexmahone
  • · Replies 1 ·
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1

Simple probability question

  • alexmahone
  • · Replies 3 ·
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3

Probability of Consecutive Data Points Rising and Falling in a Saw-tooth Pattern

  • InfoQualityDude
  • · Replies 1 ·
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1

Undergrad Questionable statistics formula?

  • 13ugwh!z
  • · Replies 2 ·
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2

Undergrad Is Marilyn Vos Savant wrong on this probability question?

  • CantorSet
  • · Replies 144 ·
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Graduate The class indexed by real numbers is a set?

  • julypraise
  • · Replies 7 ·
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7

Prove that A and B are disjoint

  • alexmahone
  • · Replies 8 ·
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8

Undergrad Equivalence Classes Explaination

  • Sinister
  • · Replies 3 ·
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3

Graduate Proving a distribution is a member of generalised exponential family

  • johnaphun
  • · Replies 6 ·
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6
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2

Graduate Fano plane concept applied to lottery combinatorics

  • scalpmaster
  • · Replies 1 ·
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1

Undergrad How Is ASSASSINATION Arranged Without Adjacent S's?

  • Perpendicular
  • · Replies 2 ·
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2

Mean and Autocorrelation of a Deterministic Function

  • OhMyMarkov
  • · Replies 3 ·
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3

Graduate Statistical testing for stock selection back-test results

  • unleash
  • · Replies 1 ·
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1

Graduate Is There a Bijection Between Subsets of Countable Sets?

  • Rasalhague
  • · Replies 4 ·
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4

Undergrad Proving p→q from five given axioms

  • LCharette
  • · Replies 1 ·
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1

Graduate Distribution of Euclidean Distance btwn 2 Non-Centered Points in 2D

  • Amiutza
  • · Replies 4 ·
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4

Undergrad Is the Approximation tanh(t) ~ t - t^3/3 + 5t^5 Accurate as t Approaches Zero?

  • sam_0017
  • · Replies 1 ·
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1

Graduate Formulating null and alternative hypotheses for a chi-squared test

  • Eruditio
  • · Replies 6 ·
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6

Diophantine equation second grade

  • Lolyta
  • · Replies 1 ·
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1

Undergrad Can someone explain what is generalized linear model? Examples?

  • kulimer
  • · Replies 1 ·
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1

Graduate Skewed or Noncentral T Distribution

  • pkxt
  • · Replies 1 ·
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1

Undergrad Proving piece-wise function is one-to-one?

  • Norm850
  • · Replies 1 ·
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1

Graduate Arithmetic vs. geometric uncertainties

  • Loren Booda
  • · Replies 2 ·
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2

Graduate Why is the All but Finitely Many Theorem Important?

  • Rasalhague
  • · Replies 3 ·
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3

Undergrad Probability function with specification for different range ?

  • RufusDawes
  • · Replies 3 ·
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3

Graduate Permutation - 7 identical items, 32 distinct containers

  • rcgldr
  • · Replies 18 ·
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18

Graduate Convex Functions: Proving g(x) is Convex

  • russel.arnold
  • · Replies 1 ·
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1

High School Can an average man groom with 7 women and average woman with 12 men?

  • cng99
  • · Replies 7 ·
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7

Graduate Closure of relations betweens sets

  • user88
  • · Replies 8 ·
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8

Closed form for the nonlinear recurrence a(n+1) = a(n)² - 1

  • chisigma
  • · Replies 3 ·
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3

Undergrad Number of Tests and Accuracy. Criteria?

  • Bacle2
  • · Replies 2 ·
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2

Graduate Can we construct a truth table with infinitely many variables?

  • cragar
  • · Replies 12 ·
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12

Graduate How Can Equivalence Relations Determine Equal Classes?

  • Tokenfreak
  • · Replies 3 ·
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3

Graduate Is F a Subgraph of Every Spanning Tree of G If It Contains No Cycles?

  • Gh0stZA
  • · Replies 15 ·
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15

Undergrad Figuring out compounding interest

  • drymetal
  • · Replies 3 ·
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3

Undergrad What are the odds of a shuffled deck arranging itself in perfect order?

  • msmandy
  • · Replies 4 ·
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4

Undergrad Decompostion of conditional probabilities

  • torquerotates
  • · Replies 4 ·
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4

Undergrad Number of combinations of 30 dice rolls

  • njl86
  • · Replies 1 ·
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1

Undergrad Why is chi^2/ndf close to 1 a good fit?

  • DougUTPhy
  • · Replies 1 ·
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1

Graduate Real Numbers: Axioms or Theorem?

  • LikeMath
  • · Replies 2 ·
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2

Undergrad Probabilities, 7 items, 4 containers

  • rcgldr
  • · Replies 4 ·
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4

Graduate Joint probability distribution of two images

  • atrus_ovis
  • · Replies 1 ·
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1

Undergrad Checking a 2-player finger game for fairness using payoff tables

  • musicgold
  • · Replies 6 ·
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6

Undergrad Conditional Probability without Bayes rule

  • torquerotates
  • · Replies 5 ·
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5