What Does a T-Distribution Tell You? Tail heaviness is determined by a parameter of the t-distribution calleddegrees of freedom, with smaller values giving heavier tails, and with higher values making the t-distribution resemble a standard normal distribution with ameanof 0 and astandard deviation...
翻译：如果这一堆观测量是正态分布的，那么这些观测量中有百分之多少的观测量是距离平均值大于1.3个标准差的（那个符号是标准差的意思）因为任何正态分布的变量都可以转化成标准正态分布变量（所有变量减去均值以后再除以标准差）之后就可以查询标准正态分布比例表了，Φ(z=1.3)-Φ(z=-1.3)=0.9...
Suppose X is normally distributed with mean 20 and standard deviation 4, find the value x_0 such that P(X greater than or equal to x_0) = 0.975. If a random variable X is normally distributed with a mean of 30 and a standard ...
Given that X is a normally distributed variable with a mean of 50 and a standard deviation of 2, find the probability that X is between 47 and 54. Given that X is normally distributed with a mean of 0.545 and a stan...
It is the set of values that a variable can take together with the probability or frequency distribution for those values. Wiki User ∙10yago This answer is: Add your answer: Earn +20pts Q:What does data distribution mean? Write your answer... ...
When data are normally distributed, plotting them on a graph results a bell-shaped and symmetrical image often called the bell curve. In such a distribution of data,mean, median, and modeare all the same value and coincide with the peak of the curve. ...
The mean is a useful measure when the data is normally distributed and the outliers do not significantly affect the overall pattern of the data. Regression Regression Analysis is a statistical method used to model the relationship between two or more variables. It is a powerful tool for predict...
Does ANOVA Rely on Any Assumptions? Yes, ANOVA tests assume that the data is normally distributed and that variance levels in each group are roughly equal. Finally, it assumes that all observations are made independently. If these assumptions are inaccurate, ANOVA may not be useful for comparing...
Assume that the differences in days are normally distributed. What is the degrees of freedom in this problem? a. 3 b. 8 c. 5 d. 9 e. 4 Degree of Freedom in a T-Paired Test: In a paired-sample hypothesis test, the num...
Answer to: Isat test scores are normally distributed with a mean of 152 and a standard deviation of 5. What score would place you in the top 2% of...