Formulas for probability statistics
[DOC File]Advanced Excel - Statistical functions & formulae
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The significance level of a statistical hypothesis test is a fixed probability of wrongly rejecting the null hypothesis H0, if it is in fact true. S. The variance – a measure of the dispersion or spread of scores around its average. σ2. Standard deviation – another measure of the dispersion of scores. ∑ Sum of a series of values. t-test
[DOC File]Counting Rule for Combinations
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Conditional Probability. or Multiplication Law. or Multiplication Law for Independent Events. Expected Value of a Discrete Random Variable. Variance of a Discrete Random Variable. Binomial Probability Function. Expected Value and Variance for the Binomial Distribution. Poisson Probability Function. where = the probability of x occurrences in an ...
[DOC File]Formula Sheet and List of Symbols, Basic Statistical Inference
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Title: Formula Sheet and List of Symbols, Basic Statistical Inference Author: Brian Stipak Last modified by: Brian Stipak Created Date: 2/1/2007 8:56:00 PM
[DOC File]SOME STATISTICS FORMULAS
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PROBABILITY FORMULAS Probability of an event A. where f = frequency of occurrence of event n = sample size Probability of the complement of event A. P(not A) = 1 - P(A) Multiplication rule for independent events. General multiplication rules Addition rule for mutually exclusive events. P(A or B) = P(A) + P(B) General addition rule
[DOC File]Elementary Statistics Formulas
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Basic Probability. Probability, as it turns out, is very difficult to define. (See Section VI for more on this.) I will assume that you all have an intuitive understanding of phrases such as “There is a 30% chance of rain tomorrow” or “The probability that a fair die comes up 5 is 1/6”. There are two basic rules for combining probabilities:
[DOC File]INTRODUCING PROBABILTY (for statistics as well as probability)
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Example: Take two random numbers between 0 and 1 and add them together. The probability density curve is a triangle from 0 to 2 with peak height 1 at 1. Verify this is a legit probability density curve, that is, show the area under it is 1. Find the probability the sum is less than 1. …
[DOC File]Probability and Statistics
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Probability and Statistics Name_____ HW 4 - Review 1. Formulas: 1. The PTA gives a $500 cash prize in a raffle. If 2000 tickets are sold at $5 each and you purchase 10 tickets, find the expected value. 2. If 30% of all commuters ride the bus to work, find the probability that …
[DOC File]Advanced Excel - Statistical functions & formulae
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Step 5. Interpret the probability results by evaluating the F ratio. If the F ratio is larger than the F critical value, F crit, there is a statistically significant difference. If it is smaller than the F crit value, the score differences are best explained by chance. The F ratio 12.57 …
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