我认为这只是对函数工作原理的误解，下面是一个使用stat_function()生成正确结果的示例：
and dnorm maybe useful in computing the negative log-likelihood.) (d) Use your function negll to evaluate and print out the negative log-likelihood for the data in trnormal.dat for a few sensible values of µ and σ. (e) Use the R function nlm to find and print out the maximum li...
简短回答：car::dataEllipse使用F统计量截止值（类似于Student t分布截止值，考虑方差估计的不确定性）。
基本上发生的是ggdist的默认带宽估计器选择了一个较小的带宽，所以尖峰更窄更高。除此之外，他们基本上...
density as an R function. Use your function to plot this density for enough values of z between -1 and 10 to make the plot look smooth. (d) Implement an importance sampler using a N(µ, σ2) as the proposal density. Again, use 1,000 ...
这种强制转换将在ggplot()的代码内部进行--毕竟，这些日期需要在某个时候被分配到笛卡尔坐标，以便绘制...
not constant and, in fact, varies as a function of temperature. For example, the heat capacity of a material could increase with temperature according to a relationship such as = 0.132 + 1.56 10!!+ 2.64 10!!! (2) In this instance you are asked to compute the heat required to raise ...
a function named my_det() which takes a square matrix and returns the value of its determinant. Your function should check if the input matrix is a square matrix and return the error message “Input matrix is not a square matrix.” when necessary. ...
function in R for a Bernoulli distribution.) Each time, fit the model: Store the test statistics for two tests: The Wald test for H0 : β2 = 0, which we say follows a standard normal distribution for “large” samples The likelihood ratio test for H0 : β2 = β3 = 0, which we ...
An alternative for fixing constants is the function fixConstants. 因此我们可以如下定义模型 1 2 3 4 5 6 7 8 9 MA <- array(c(1,-1.5,0.5),c(3,1,1)) C <- array(c(0,0,0,-0.5,-0.5,-0.5),c(5,1,1)) AR <- array(c(1,-0.5),c(2,1,1)) TR <-array(c(50),c(1,1...