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

Does it suffice to show these relations?

  • evinda
  • · Replies 5 ·
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5

When is the set $B \times B$ a function?

  • evinda
  • · Replies 11 ·
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11

Define Sets $\{x,y\}$ and $x \cup y$

  • evinda
  • · Replies 2 ·
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2

Why does the inequality stand if there are no common elements?

  • evinda
  • · Replies 1 ·
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1

Example for which the relation does not stand

  • evinda
  • · Replies 1 ·
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1
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1

What is the meaning of consequence in logic?

  • hossam killua
  • · Replies 1 ·
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1

Proving Inverse of 1-1 Function $f$

  • evinda
  • · Replies 1 ·
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1

Example of Set for Relation Restriction to A

  • evinda
  • · Replies 1 ·
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1

Graduate Does this make sense? A binomial distribution with a twist.

  • WendyE
  • · Replies 11 ·
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11

How is a Relation a Subset of an Ordered Pair?

  • evinda
  • · Replies 6 ·
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6

Cartesian Product of Sets: A, B & C

  • evinda
  • · Replies 7 ·
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7

Why doesn't it come from a cartesian product of sets?

  • evinda
  • · Replies 4 ·
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4

Is the Cartesian Product of Two Sets Well-Defined?

  • evinda
  • · Replies 10 ·
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10

Graduate Is ℝ or ℝ2 Bigger in the Upper Right Quadrant of the Unit Square?

  • johann1301
  • · Replies 2 ·
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2

Undergrad T-test: normal probability plot

  • serbring
  • · Replies 2 ·
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2

Is this a valid method for selecting a Simple Random Sample?

  • Ackbach
  • · Replies 5 ·
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5

Graduate (Im)possibility to prove the Goodstein's theorem

  • Demystifier
  • · Replies 4 ·
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4

Graduate Doubt about the solutions of the equation aZ + bz + c = 0

  • PcumP_Ravenclaw
  • · Replies 1 ·
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1

Undergrad NEED help for negative binomial distributon

  • adarshnor
  • · Replies 1 ·
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1

Undergrad How do I account for measurement uncertainties in temperature data analysis?

  • gnurf
  • · Replies 1 ·
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1

Why Prove \( x = y \) in \( \mathcal{P} \cup A \)?

  • evinda
  • · Replies 6 ·
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6

Undergrad One-to-One Function: Definition & Examples

  • Nert
  • · Replies 2 ·
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2

How can you find the powerset of sets using simple identities?

  • evinda
  • · Replies 2 ·
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2

Graduate Goodstein theorem without transfinite numbers?

  • Demystifier
  • · Replies 2 ·
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2

Statistsics Mathematics Problem: Linear Regression

  • iamblessed20062
  • · Replies 3 ·
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3

Graduate Salmon's 'proof' for the existence of the empty set

  • Stoney Pete
  • · Replies 1 ·
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1

Graduate "The Chase" Quiz Show -- probability of being caught by the Chaser

  • skiller
  • · Replies 1 ·
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1

What does "v belongs to v" mean?

  • evinda
  • · Replies 12 ·
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12

The set of all sets does not exist.

  • evinda
  • · Replies 2 ·
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2

Why Is $\{ x: \phi(x) \}$ a Set Given $Y$?

  • evinda
  • · Replies 2 ·
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2

Convert a non-deterministic finite automata to a regular expression.

  • JamesBwoii
  • · Replies 2 ·
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2
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3

Is A the Empty Set When A is a Subset of the Empty Set?

  • evinda
  • · Replies 8 ·
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8

How can I show that the sets are pairwise disjoint?

  • evinda
  • · Replies 12 ·
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12

How can I find the exact solution?

  • evinda
  • · Replies 15 ·
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15

Proving Uniqueness of a Set: A Logical Approach

  • evinda
  • · Replies 7 ·
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7

Help with Statistical Inference

  • trousmate
  • · Replies 3 ·
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3

Graduate E(X) and the Equality of Expectation: Debunked or Confirmed?

  • torquerotates
  • · Replies 1 ·
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1

Undergrad Sample Size and Standard Deviation of the Sampling Distribution of the Mean

  • nraic
  • · Replies 11 ·
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11

Graduate Will an Immortal Snail Ever Reach the Other End of a Stretching Rubber Band?

  • Office_Shredder
  • · Replies 29 ·
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29

Proving K-Extendability of a Bipartite Graph

  • Aryth1
  • · Replies 1 ·
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1

Graduate Communicating Classes in Markov Chains

  • Arsenic&Lace
  • · Replies 2 ·
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2

Recurrence Relation: Master Theorem Solution

  • evinda
  • · Replies 2 ·
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2

Why can we not apply the theorem?

  • evinda
  • · Replies 13 ·
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13

Undergrad Conditional Probability Formula

  • Avichal
  • · Replies 3 ·
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3

Undergrad Logistic Regression Research: 99% Concordance, Few Significance

  • mathmathRW
  • · Replies 1 ·
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1

Why Is the Empty Set Considered Unique?

  • evinda
  • · Replies 10 ·
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10

Undergrad Expected value and variance of these sums

  • Dixanadu
  • · Replies 2 ·
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2

Induction Proofs & Negative Proofs: Examining POTW 135

  • topsquark
  • · Replies 1 ·
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1

Undergrad Effective annual return rate and the annual percentage return rate

  • beaf123
  • · Replies 6 ·
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6

Probability function (p.f) of a random variable

  • serbskak
  • · Replies 1 ·
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1

Is the Equation in a Circle Correct?

  • hossam killua
  • · Replies 2 ·
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2

Can I Determine if a Formula is a Tautology by Finding its CNF and DNF?

  • hossam killua
  • · Replies 3 ·
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3

Rewrite the following sentence as a formal proposition.

  • Henry R
  • · Replies 2 ·
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2

How to give a proof of tautologies?

  • Henry R
  • · Replies 4 ·
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4

Undergrad Calculate the standard deviation of Gaussian distribution ,thanks

  • chener
  • · Replies 2 ·
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2

Probability question involving finding gain or loss of a game

  • Milly
  • · Replies 4 ·
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4
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2

Graduate How good is a fit for a set of points?

  • Uriel
  • · Replies 1 ·
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1

Conditional Probability vs Normal

  • jacobson00
  • · Replies 6 ·
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6

Undergrad Examples of A intersection B being an element of A

  • Stephen Tashi
  • · Replies 4 ·
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4

Graduate Transforming Two Normal Random Variables into a Non-Central F Distribution

  • zli034
  • · Replies 2 ·
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2

Graduate Question on testing logical truths for set operations

  • schlynn
  • · Replies 1 ·
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1

Undergrad Non-parametric single set test of the mean

  • FunkyDwarf
  • · Replies 8 ·
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8

Probability: Calculating the Chances of Success

  • Rojito
  • · Replies 3 ·
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3

What is the relationship between Z-scores and probability?

  • yourneighbours
  • · Replies 2 ·
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2

Undergrad What is the Best Way to Determine Sampling Accuracy in Large Populations?

  • Virous
  • · Replies 4 ·
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4

Proving $T(n)=O(n^2 \lg^2 n)$ Using Recurrence Relation

  • evinda
  • · Replies 2 ·
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2

Graduate Hierarchical Clustering: Ward linkage

  • eoghan
  • · Replies 1 ·
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1

Undergrad A math foundation problem, of sorts

  • jeremy22511
  • · Replies 8 ·
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8

Graduate Conditional Probability: Converting CDF to PDF for Independent Random Variables

  • joshthekid
  • · Replies 2 ·
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2

Graduate Empty set disjoint with itself paradoxical?

  • Stoney Pete
  • · Replies 22 ·
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22

How is Probability Applied in Newspaper Reading Time Statistics?

  • tcardwe3
  • · Replies 9 ·
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9

Number of 7-Card Hands With 5 Spades & 2 Hearts

  • Walker14
  • · Replies 8 ·
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8

Upper Bound for Recurrence Relation: $T(n) \leq c n^2 \log^2 n$

  • evinda
  • · Replies 6 ·
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6

Graduate What is the Average Number of Guesses in a Game with Varying Step Sizes?

  • chingel
  • · Replies 4 ·
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4

Undergrad What Is a Grouping Factor in Graphical Modelling?

  • paalfis
  • · Replies 3 ·
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3

Undergrad Testing Randomness in a Set of 200+ Data Points

  • qspeechc
  • · Replies 2 ·
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2

Finding the Autocovariance function

  • nacho-man
  • · Replies 5 ·
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5

You're welcome! Glad I could help. (Thumbs up)

  • evinda
  • · Replies 4 ·
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4
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10

What is the solution (rational function/interval table)?

  • eleventhxhour
  • · Replies 4 ·
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4

How do you solve and plot inequalities with multiple variables?

  • ai93
  • · Replies 6 ·
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6

Undergrad Natural deduction sets (Rules of nature deduction)

  • emanoelvianna
  • · Replies 3 ·
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3

What is the cartesian product of two sets?

  • evinda
  • · Replies 4 ·
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4

Graduate Solving Asymetric Probability Distribution w/68% Interval

  • gaby287
  • · Replies 2 ·
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2

Graduate What Is the Dimension of a Graphical Model?

  • paalfis
  • · Replies 1 ·
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1

Can Single Element Sets Be Subsets of Power Sets?

  • evinda
  • · Replies 1 ·
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1

High School Square root of 2 divided by 0 is rational?

  • PcumP_Ravenclaw
  • · Replies 5 ·
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5

How do we know that i is at least one negative?

  • evinda
  • · Replies 2 ·
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2

How to find if there are outliers, given mean, median, etc

  • chriskeller1
  • · Replies 2 ·
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2

Undergrad Addition Rule for Random Variables

  • Peter G.
  • · Replies 3 ·
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3

Binomial probability or poisson?

  • Tbx013
  • · Replies 1 ·
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1

Graduate Simple pictorial proof of the uncountability of irrationals?

  • David Carroll
  • · Replies 6 ·
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6

Marginal probability density functions (pdf)

  • QuebecRb
  • · Replies 1 ·
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1

MGF relating to random sum of random variables

  • nedflanders
  • · Replies 1 ·
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1

Graduate Selection bias with respect to potentially apocalyptic events

  • Patra Neutrino
  • · Replies 4 ·
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4

Graduate A confusion about Godel theorem and real numbers

  • Demystifier
  • · Replies 7 ·
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7

Graduate "Probabilty amplitude" meaning ?

  • microsansfil
  • · Replies 7 ·
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7