In anticipation of probable results, Thorndike amends his statement on expectation: "Whatever be the nature of an animal's expectation, its potency will depend mainly, perhaps entirely, on its connections."doi:10.1533/9780857099471.195G.P. Beaumontprobability & random variables
A Random Variable is a set of possible values from a random experiment. ... Lets give them the values Heads=0 and Tails=1 and we have a Random Variable X
Nature excels in dealing withvarianceand dilute being, while human artifacts do not. 自然的拿手好戏就是处理分散和稀释的东西, 而人工却处理不了. 期刊摘选 Review and analyze manufacturingvarianceaccounts each month and prepare reconciliation reports. ...
Let X be a random variable with a mean μ and a variance o2.Let {Xn)n=1 be a sequence of independent and identically dis-tributed random variables. If the common mean and variance of the X,'s are μ and o2, respectively, then show that P(|(X_n)-μ|≥r)≤(σ^2)/(nr^2) ...
The random variable X has a normal distribution with mean μ (unknown) and variance o2(known). To test the null hypothesis Ho: =o, a random sample of n observations of X is taken,and the sample mean is x. Find, in terms of μo, o and n, the set of values of x which will re...
the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value an activity that varies from a norm or standard the quality of being subject to variation a difference between conflicting facts or claims or opinions discord that spl...
n. the second moment around the mean; the expected value of the square of the deviations of a random variable from its mean value n. an official dispensation to act contrary to a rule or regulation (typically a building regulation)
To better understand the definition of variance, we can break up its calculation in several steps: compute the expected value of , denoted by construct a new random variable equal to the deviation of from its expected value; take the square ...
First, initialize the random number generator to make the results in this example repeatable. rng(0,'twister'); Create a vector of 1000 random values drawn from a normal distribution with a mean of 500 and a standard deviation of 5. ...
the expected value of the square of the deviations of a random variable from its mean value 6. discord that splits a group Synonym: division 7. an event that departs from expectations Synonym: discrepancyvariant相关词组 经典引文 1. at variance with : 与...有分歧; 2. at variance : 有...