How do you find the expected value example?

How do you find expected value on a TI 84?

Expected Value/Standard Deviation/Variance

  1. Enter data into L1 and L2 as in the above.
  2. Press STAT cursor right to CALC and down to 1: 1-Var Stats.
  3. When you see 1-Var Stats on your home screen, add L1,L2 so that your screen reads 1-Var Stats L1,L2 and press ENTER.
  4. The expected value is the first number listed : x bar.

How do you find the expected expectation in math?

The mathematical expectation of a random variable X is also known as the mean value of X. It is generally represented by the symbol μ; that is, μ = E(X). Thus E(X − μ) = 0. Considering a constant c instead of the mean μ, the expected value of X − c [that is, E(X − c)] is termed the firstmoment of X taken about c.

How do you find expected value on TI 83?

Expected Value/Standard Deviation/Variance

  1. Enter data into L1 and L2 as in the above.
  2. Press STAT cursor right to CALC and down to 1: 1-Var Stats.
  3. When you see 1-Var Stats on your home screen, add L1,L2 so that your screen reads 1-Var Stats L1,L2 and press ENTER.
  4. The expected value is the first number listed : x bar.

How do you write Y1 on a TI 84?

Graph Y1. Press 2nd [calc] 2 to select zero. Note: If more than one graph is displayed press △ until the expression for Y1 appears at the top of the screen. Move the cursor to a point just to the left of a zero (or type in a number less than a zero) and press enter.

How do you calculate expected value on a Casio calculator?

1:452:29Casio fx-9860: Discrete Probability, E(x) and standard deviationYouTube

How do I calculate expected value in Excel?

To calculate expected value, you want to sum up the products of the X's (Column A) times their probabilities (Column B). Start in cell C4 and type =B4*A4. Then drag that cell down to cell C9 and do the auto fill; this gives us each of the individual expected values, as shown below.

What is the expected value of 1?

The expected value of a constant is just the constant, so for example E(1) = 1.

What is the use of expected value?

Expected value is a commonly used financial concept. In finance, it indicates the anticipated value of an investment in the future. By determining the probabilities of possible scenarios, one can determine the EV of the scenarios.

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