Density of multivariate t-distribution

In this exercise, you will calculate the density of multivariate t-distributions using the 200 samples generated in the previous exercise, that were stored in the multt.sample object.

本练习是课程的一部分

Multivariate Probability Distributions in R

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练习说明

Calculate the density heights of the 200 samples in multt.sample for a bivariate t-distribution with location mu.sim, variance-covariance matrix sigma.sim and 5 degrees of freedom.
Create a 3d scatterplot to visualize the density heights at each of the 200 points.

交互式实操练习

通过完成这段示例代码来试试这个练习。

# Calculate densities
multt.dens <- dmvt(___) 

# Plot 3D heights of densities
___(___(___, multt.dens),     
                 color = "blue", pch = "", type = "h",             
                              xlab = "x", ylab = "y", zlab = "density")

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