A [分析] 峰度(kurtosis)是指一个分布与正态分布在陡峭程度上的差异程度。高峰态(leptokurtic)指一个分布的峰值比正态分布更为陡峭;低峰态(platykurtosis)指一个分布的峰值比正态分布更为平缓。 如图1所示,与正态分布相比,高峰态分布会有更多的观测值集中在(算术)平均值附近(图中a区),同时会有更多远离平均值的
n. statements about a normal distribution is least accurate. A. The mean, median, and mode are equal. B. A normal distribution has excess kurtosis of three. C. The mean and variance completely define a normal distribution. D. Approximately 68% of the observations lie within +/- 1 ...
ageneralisation of the results to other contexts 结果的概念化到其他上下文[translate] aA normal distribution is defined by a point a certain number of standard deviations away from the mean: 正常分配是由点定义的一定数量的标准偏差从手段:[translate]...
What makes the normal distribution a probability distribution? What is the area under the standard normal distribution curve between z = 1.50, and z = 2.50? What is the special property of the standard normal distribution? Between what two values does 96% of the data lie for a standard norma...
Question: The standard deviation of a normal distribution is 12 and 95% of the values are greater than 6. What is the value of the mean? Mean: Mean refers to the average of all the given values. This is the most common average used...
A. skewed to the right. B. skewed to the left. C. useful in describing the distribution of portfolio values. 相关知识点: 试题来源: 解析 B The lognormal distribution is bounded by zero and thus skewed to the right.反馈 收藏
Explain the relationship between normal and lognormal distributions and why the lognormal distribution is used to model asset prices.The lognormal distribution is bounded by zero and thus skewed to the right. The lognormal distribution is a good fit to stock prices as stock prices can not fall...
This chapter describes the normal distribution in detail. The normal distribution is the most important of all probability distributions. It is applied directly to many practical problems, and several very useful distributions are based on it. The chapter lists the characteristics and provides the ...
单项选择题 Compared to a normal distribution, a lognormal distribution is least likely to be:() A. skewed to the left. B. skewed to the right. C. useful in describing the distribution of stock prices. 点击查看答案&解析手机看题 你可能感兴趣的试题...
What Is Normal Distribution? The Normal Distribution, also known as the Gaussian Distribution, represents the probability distribution of a sample space. Key characteristics of the normal distribution include: Symmetry around the mean (average). A mean of zero. A standard deviation of 1. The ...