기대값

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  1. This type of expected value is called an expected value for a binomial random variable.[1]
  2. Of course, calculating expected value (EV) gets more complicated in real life.[1]
  3. The expected value of a random variable is just the mean of the random variable.[1]
  4. You can think of an expected value as a mean, or average, for a probability distribution.[1]
  5. Expected value (also known as EV, expectation, average, or mean value) is a long-run average value of random variables.[2]
  6. Expected value is a commonly used financial concept.[2]
  7. is the expected value of the probability distribution of possible returns it can provide to investors.[2]
  8. However, in finance, many problems related to the expected value involve multiple events.[2]
  9. The expected value (EV) is an anticipated value for an investment at some point in the future.[3]
  10. Scenario analysis is one technique for calculating the expected value (EV) of an investment opportunity.[3]
  11. The expected value is also known as the expectation, mathematical expectation, mean, average, or first moment.[4]
  12. For multidimensional random variables, their expected value is defined per component.[4]
  13. There are a number of inequalities involving the expected values of functions of random variables.[4]
  14. In this and in the next section, we shall discuss two such descriptive quantities: the expected value and the variance.[5]
  15. We first need to develop some properties of the expected value.[5]
  16. One can also interpret this number as the expected value of a random variable.[5]
  17. This method of calculation of the expected value is frequently very useful.[5]
  18. We would like to define its average, or as it is called in probability, its expected value or mean.[6]
  19. Before doing the math, we suggest that you try to guess what the expected value would be.[6]
  20. Thinking of decisions in terms of expected value is a simple way to decide whether or not there is economic reason to engage in an activity.[7]
  21. The expected value of a random variable is the weighted average of all possible values of the variable.[8]
  22. What is the expected value of the length of a carrot?[8]
  23. What is the expected value of the points you take from this test?[8]
  24. Let’s also find the expected value with the formula and see if we get the same result.[8]
  25. But what we care about in this video is the notion of an expected value of a discrete random variable, which we would just note this way.[9]
  26. One way to think about the value of this drug to a new patient is in terms of its expected value.[10]
  27. So the expected value equals (0.6 x one year of fulfilled life) + (0.4 x 0) = 0.6 years of fulfilled life.[10]
  28. Expected value is useful for selecting between projects.[10]
  29. The expected value informs about what to expect in an experiment "in the long run", after many trials.[11]
  30. Expected value is a theoretical value that shows the average return of an action you’d get if it was repeated infinite times.[12]
  31. As I said: expected value is a theoretical value.[12]
  32. As I said, the concept of expected value is so, so simple.[12]
  33. The orange line represents the expected value in each round.[12]
  34. The formula means that we take each value of x, subtract the expected value, square that value and multiply that value by its probability.[13]
  35. In general, giving a rigorous definition of expected value requires quite a heavy mathematical apparatus.[14]
  36. This section introduces a general formula for computing the expected value of a random variable .[14]
  37. A completely general and rigorous definition of expected value is based on the Lebesgue integral.[14]
  38. The expected value of , denoted by , is just the vector of the expected values of the components of .[14]
  39. We have seen that for a discrete random variable, that the expected value is the sum of all xP(x) .[15]
  40. The expected value is what you are used to as the average.[15]
  41. The expected value is given by Next, we find the variance.[15]
  42. If the stack is shuffled and a card is drawn, what is the expected value of the card drawn?[16]
  43. The expected value of the card drawn is 3.[16]
  44. The lean is toward the Pelicans (-167), but there is better expected value on the spread.[17]
  45. Each circle represents a Fed official’s expected value of the federal-funds rate for the corresponding year or time period.[17]
  46. More formally, the expected value is a weighted average of all possible values.[18]
  47. The expected value plays important roles in a variety of contexts.[18]
  48. Expected value is one of the most important concepts in probability.[19]
  49. The expected value of a real-valued random variable gives the center of the distribution of the variable, in a special sense.[19]
  50. The expected value of \(X\) is also called the mean of the distribution of \(X\) and is frequently denoted \(\mu\).[19]
  51. The important fact is that the average value \(M_n\) converges to the expected value \(\E(X)\) as \(n \to \infty\).[19]
  52. One of these is the expected value or mean, which can give us information about a typical scenario.[20]
  53. They prefer a fixed sum of money to a gamble that has the same expected value.[21]
  54. Find the long-term average or expected value, μ, of the number of days per week the men's soccer team plays soccer.[22]
  55. The table helps you calculate the expected value or long-term average.[22]
  56. Find the expected value of the number of times a newborn baby's crying wakes its mother after midnight per week.[22]

소스

  1. ↑ 1.0 1.1 1.2 1.3 Expected Value in Statistics: Definition and Calculations
  2. ↑ 2.0 2.1 2.2 2.3 Definition, Formula, and Example
  3. ↑ 3.0 3.1 Expected Value (EV)
  4. ↑ 4.0 4.1 4.2 Expected value
  5. ↑ 5.0 5.1 5.2 5.3 6.1: Expected Value of Discrete Random Variables
  6. ↑ 6.0 6.1 Expectation
  7. ↑ What is Expected Value?
  8. ↑ 8.0 8.1 8.2 8.3 Expected Value of Random Variables — Explained Simply
  9. ↑ Mean (expected value) of a discrete random variable (video)
  10. ↑ 10.0 10.1 10.2 Expected value theory
  11. ↑ Expected Value
  12. ↑ 12.0 12.1 12.2 12.3 Expected Value (Formula, Explanation, Everyday Usage and a Game)
  13. ↑ 3.2.1 - Expected Value and Variance of a Discrete Random Variable
  14. ↑ 14.0 14.1 14.2 14.3 Expected value
  15. ↑ 15.0 15.1 15.2 Expected Value and Variance
  16. ↑ 16.0 16.1 Brilliant Math & Science Wiki
  17. ↑ 17.0 17.1 Definition of Expected Value by Merriam-Webster
  18. ↑ 18.0 18.1 Expected Value and Standard Error
  19. ↑ 19.0 19.1 19.2 19.3 Definitions and Basic Properties
  20. ↑ Part 10: Expected Value and Mean | Year 11 Statistics
  21. ↑ Expected Value
  22. ↑ 22.0 22.1 22.2 4.2 Mean or Expected Value and Standard Deviation

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