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  • 12:46, 12 December 2017 (diff | hist) . . (+2)‎ . . TDSM 12.17 ‎ (current)
  • 12:46, 12 December 2017 (diff | hist) . . (+160)‎ . . N TDSM 12.17 ‎ (Created page with "Similar type and content from multiple different accounts Short and multiple posts in a short time Track MAC/IP or tracked physical address from these accounts")
  • 05:42, 12 December 2017 (diff | hist) . . (-12)‎ . . TDSM 5.3 ‎
  • 18:00, 8 October 2017 (diff | hist) . . (+24)‎ . . N User:Trtnguyen ‎ (Created page with "Trung Nguyen - 111752939") (current)
  • 17:58, 8 October 2017 (diff | hist) . . (+830)‎ . . N TDSM 8.9 ‎ (Created page with "LU factorization of a matrix is not necessarily unique. Example: proof for <math>2 \times 2</math> square matrix: Let <math> L = \begin{bmatrix} 1 & 0\\ l & 1 \end{bmatrix}...")
  • 17:47, 8 October 2017 (diff | hist) . . (-4)‎ . . TDSM 8.11 ‎
  • 17:46, 8 October 2017 (diff | hist) . . (+608)‎ . . N TDSM 8.11 ‎ (Created page with "Proof for <math> 2\times 2</math> square matrix (higher degree matrixes proof is similar): Let <math> L = \begin{bmatrix} 1 & 0\\ l & 1 \end{bmatrix} </math>, <math> U = \...")
  • 17:30, 8 October 2017 (diff | hist) . . (+382)‎ . . N TDSM 8.3 ‎ (Created page with "Assume that <math>A</math> is a <math>m \times n</math> matrix, <math>B</math> is a <math>n \times p</math> matrix, <math>C</math> is a <math>p \times q</math> matrix. <math>...") (current)
  • 17:22, 8 October 2017 (diff | hist) . . (+481)‎ . . N TDSM 8.1 ‎ (Created page with "a) <math> A = \begin{bmatrix} 1 & 2\\ 2 & 3 \end{bmatrix} </math>, <math> B = \begin{bmatrix} -4 & 1\\ 1 & 0 \end{bmatrix} </math> <math> \Rightarrow AB = BA = \begin{bma...")
  • 16:16, 8 October 2017 (diff | hist) . . (+1)‎ . . m TDSM 2.15 ‎
  • 15:59, 8 October 2017 (diff | hist) . . (+214)‎ . . N TDSM 5.3 ‎ (Created page with "<math>B(100, 0.5) \approx N(100 \times 0.5, 100 \times 0.5 \times 0.5) = N(50, 25)</math> <math>P(X \leq 70) = 1 - P(X < 70) = 1 - P \left( Z < \frac{70-50}{25} \right) =...")
  • 15:43, 8 October 2017 (diff | hist) . . (+327)‎ . . N TDSM 5.13 ‎ (Created page with "Bayes' theorem describes the probability of an event, based on prior knowledge of conditions that might be related to the event. It is useful in practice because it links the...") (current)
  • 15:35, 8 October 2017 (diff | hist) . . (+9)‎ . . TDSM 5.1 ‎
  • 15:34, 8 October 2017 (diff | hist) . . (+666)‎ . . N TDSM 5.1 ‎ (Created page with "a) The number of leaves on a fully grown oak tree - normal b) The age at which people's hair turns grey - normal c) The number of hairs on the heads of 20-year olds - normal d...")
  • 15:02, 8 October 2017 (diff | hist) . . (0)‎ . . TDSM 5.17 ‎
  • 14:58, 8 October 2017 (diff | hist) . . (+525)‎ . . N TDSM 5.17 ‎ (Created page with "If the ants can move without any restriction <math>\Rightarrow<\math> There are <math>2^{2n}<\math> posibilities it can move. The ant returns to its starting points after <mat...")
  • 14:45, 8 October 2017 (diff | hist) . . (+2)‎ . . TDSM 5.5 ‎
  • 14:41, 8 October 2017 (diff | hist) . . (+1)‎ . . TDSM 5.5 ‎
  • 14:41, 8 October 2017 (diff | hist) . . (+128)‎ . . N TDSM 5.5 ‎ (Created page with "That means the mean is larger than the mode <math>\Rightarrow</math> the distribution is positively skewed (skewed to the left).")
  • 14:29, 8 October 2017 (diff | hist) . . (0)‎ . . TDSM 10.27 ‎ (current)
  • 14:29, 8 October 2017 (diff | hist) . . (-2)‎ . . TDSM 10.27 ‎
  • 14:25, 8 October 2017 (diff | hist) . . (+516)‎ . . N TDSM 10.27 ‎ (Created page with "For an estimator to be effective, the distance between every point and its neighbors has to be on average smaller than a value <math>d</math>. In 1D, this requires the number...")
  • 13:55, 8 October 2017 (diff | hist) . . (+2)‎ . . TDSM 8.15 ‎
  • 23:49, 12 September 2017 (diff | hist) . . (+421)‎ . . N TDSM 2.21 ‎ (Created page with "The probability of getting exactly <math>k</math> heads on <math>n</math> tosses, where the coin has a probability of <math>p</math> in coming up heads on each toss follows th...") (current)
  • 23:30, 12 September 2017 (diff | hist) . . (+848)‎ . . N TDSM 2.27 ‎ (Created page with "- If 0 can be the first digit: For first 4 digits, choose randomly from the set 7 numbers: {0, 1, 8, 2, 5, 6, 9} <math>\Rightarrow</math> there are <math>7^4</math> ways to d...") (current)
  • 23:02, 12 September 2017 (diff | hist) . . (+614)‎ . . N TDSM 2.29 ‎ (Created page with "A/B testing is a method of comparing two versions of a product at the same time to see which one is better. It is often seen in optimizing website pages. The developer devel...") (current)
  • 22:44, 12 September 2017 (diff | hist) . . (+1,170)‎ . . TDSM 2.11 ‎
  • 22:34, 12 September 2017 (diff | hist) . . (+1,157)‎ . . N TDSM 2.11 ‎ (Created page with "Let <math>X</math> be the annual salaries of high school graduates <math>Y</math> be the annual salaries of high school graduates <math>n</math> be the number of job posit...")
  • 20:51, 12 September 2017 (diff | hist) . . (+420)‎ . . N TDSM 8.17 ‎ (Created page with "As proved in problem 8.13: the eigenvalues of <math>A</math> and <math>A^T</math> are identical, and <math>MM^T</math> = <math>(M^TM)^T</math> so the eigenvalues of <math>MM^...") (current)
  • 20:39, 12 September 2017 (diff | hist) . . (+187)‎ . . N TDSM 8.13 ‎ (Created page with "We have: <math>\det(A-\lambda I) = \det(A-\lambda I)^T = \det(A^T - \lambda I^T) = \det(A^T - \lambda I) </math> So the eigenvalues of <math>A</math> and <math>A^T</math> ar...") (current)
  • 20:27, 12 September 2017 (diff | hist) . . (+1,061)‎ . . N TDSM 8.15 ‎ (Created page with "Matrix <math>A</math> has an eigenvector <math>v</math> with eigenvalue <math>\lambda</math>. <math>\Rightarrow A = \lambda v</math> <math>\Rightarrow A^2 v = (A \cdot A) \...")
  • 19:56, 12 September 2017 (diff | hist) . . (+656)‎ . . N TDSM 4.3 ‎ (Created page with "a) Amanda's Z-score on verbal reasoning: <math>z_v = \frac{X_v - \mu_v}{\sigma_v} = \frac{160-151}{7} = 1.2857</math> Amanda's Z-score on quantitative reasoning: <math>z_q...") (current)
  • 17:55, 12 September 2017 (diff | hist) . . (+152)‎ . . N TDSM 4.1 ‎ (Created page with "Z-score of <math>x</math>: <math>Z = \frac{X-\mu}{\sigma} = \frac{5.08 - 2}{3} = 1.0267</math> <math>x</math> is 1.0267 deviations away from the mean.") (current)
  • 19:13, 11 September 2017 (diff | hist) . . (+355)‎ . . N TDSM 8.5 ‎ (Created page with "<math>AC = CA \Rightarrow ACB = CAB</math> <math>BC = CB \Rightarrow ABC = ACB</math> <math>\Rightarrow CBA = ABC</math> (1) <math>AC = CA \Rightarrow BAC = BCA</math> <ma...")
  • 18:50, 11 September 2017 (diff | hist) . . (+84)‎ . . N TDSM 2.17 ‎ (Created page with "<math>b^{(\log_b x + \log_b y)} = b^{\log_b x} \cdot b^{\log_b y} = x \cdot y</math>") (current)
  • 18:48, 11 September 2017 (diff | hist) . . (-2)‎ . . TDSM 2.9 ‎ (current)
  • 17:56, 11 September 2017 (diff | hist) . . (+136)‎ . . N TDSM 8.7 ‎ (Created page with "<math>(A^{-1})^{-1} = (A^{-1})^{-1} I = (A^{-1})^{-1} \left( A^{-1} A \right) = \left( (A^{-1})^{-1} A^{-1} \right) A = IA = A </math>") (current)
  • 17:49, 11 September 2017 (diff | hist) . . (+35)‎ . . N TDSM 2.19 ‎ (Created page with "Distributions with strong outliers.") (current)
  • 17:41, 11 September 2017 (diff | hist) . . (+12)‎ . . TDSM 2.31 ‎ (current)
  • 17:34, 11 September 2017 (diff | hist) . . (+265)‎ . . N TDSM 2.15 ‎ (Created page with "The derivative of <math>f(x) = \log_a x</math> (<math>x > 0</math>) is <math>\frac{\ln{a}}{x} > 0</math> <math>\forall x > 0</math> so <math>\log_a x</math> is an increasing f...")
  • 17:25, 11 September 2017 (diff | hist) . . (+178)‎ . . TDSM 2.9 ‎
  • 17:21, 11 September 2017 (diff | hist) . . (+149)‎ . . N TDSM 2.9 ‎ (Created page with "When all terms <math> x_0 = x_1 = \dots = x_{n-1} </math> The arthmetic mean is <math>\frac{1}{n} \sum_{i = 0}^{n-1} = \frac{1}{n}\times nx_0</math>")
  • 17:17, 11 September 2017 (diff | hist) . . (+59)‎ . . N TDSM 2.7 ‎ (Created page with "<math>P(X = 0) = 0.5</math> and <math>P(X = 1) = 0.5</math>") (current)
  • 17:16, 11 September 2017 (diff | hist) . . (+298)‎ . . N TDSM 2.5 ‎ (Created page with "Using Venn diagram we have: <math>P(\bar{A} \cap B) = P(B) - P(A \cap B)</math> <math>A</math> and <math>B</math> are independent so: <math>P(\bar{A} \cap B) = P(B) - P(A)...") (current)
  • 17:10, 11 September 2017 (diff | hist) . . (+1,247)‎ . . N TDSM 2.3 ‎ (Created page with "<table id="t01"> <tr> <th>X\Y</th> <th>1</th> <th>2</th> <th>3</th> <th>4</th> <th>5</th> <th>6</th> </tr> <tr> <th>1</th> <td>1</td...") (current)
  • 16:47, 11 September 2017 (diff | hist) . . (+1)‎ . . TDSM 2.1 ‎ (current)
  • 16:47, 11 September 2017 (diff | hist) . . (+152)‎ . . TDSM 2.1 ‎
  • 16:41, 11 September 2017 (diff | hist) . . (+548)‎ . . N TDSM 2.31 ‎ (Created page with "Two events can consistently correlate with each other but not have any causal relationship. An example is the relationship between reading ability and shoe size. If someone pe...")
  • 22:29, 31 August 2017 (diff | hist) . . (-1,938)‎ . . TDSM 2.1 ‎ (Blanked the page)
  • 22:29, 31 August 2017 (diff | hist) . . (+1,938)‎ . . N TDSM 2.1 ‎ (Created page with "Let <math>A</math> is the event that people like butter <math>\\Rightarrow P(A) = 0.8</math> '''Probability''' <br>2-1. Suppose 80% of people like peanut butter, 89% like j...")

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