standard normal Z distribution 标准正态Z分布 normal distribution 正常分布,常态分布,正态分布 normal standard 【经】 正常标准 standard distribution 标准分布 approximately normal distribution 近似正态分布 skewed normal distribution 非对称正态分布 truncated normal distribution 截断正态分布,截尾正态分布...
1 •均等分佈(UniformDistribution)•常態分佈(NormalDistribution)•指數分佈(ExponentialDistribution)2 8.2ContinuousProbabilityDistributions •Acontinuousrandomvariablehasanuncountablyinfinitenumberofvaluesintheinterval(a,b).•TheprobabilitythatacontinuousvariableXwillassumeanyparticularvalueiszero.Why?The...
A.a mean of zero and a standard deviation of one.B.a mean of one and a standard deviation of zero.C.a mean usually larger than the standard deviation.D.a mean always larger than the standard deviation.相关知识点: 试题来源: 解析 A 反馈...
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The standard normal distribution is the most important continuous probability distribution. It was first described by De Moivre in 1733 and subsequently by the German mathematician C. F. Gauss (1777 - 1885). StatsDirect gives you tail areas and percentage points for this distribution (Hill, 1973...
A. The center position is shifted to the left, but the distribution curve is the same B. The center position is shifted to the right, but the distribution curve is the same C. The center position is unchanged, but the peak of the distribution curve is higher D. The center position is...
The first column titled "Z" contains values of the standard normal distribution; the second column contains the area below Z. Since the distribution has a mean of 0 and a standard deviation of 1, the Z column is equal to the number of standard deviations below (or above) the mean. For...
百度试题 题目A standard normal distribution is a normal distribution with: 相关知识点: 试题来源: 解析 a mean of zero and a standard deviation of one.反馈 收藏
Standard deviation describes how dispersed a set of data is. It compares each data point to the mean of all data points, and standard deviation returns a calculated value that describes whether the data points are in close proximity or whether they are spread out. In a normal distribution, st...
The standard normal distribution is also called the 'Z-distribution' and the values are called 'Z-values' (or Z-scores).Z-ValuesZ-values express how many standard deviations from the mean a value is.The formula for calculating a Z-value is:...