新手请教：初学R语言，需要用到mvstats的安装包，已有win的zip格式的mvstats包，但是在mac上一直安装不成功。

目前已将.zip转为.tar格式，Rstudio显示结果如下：
> install.packages("~/Desktop/mvstats.tar", repos = NULL)
Installing package into ‘/Users/ming/Library/R/3.4/library’
(as ‘lib’ is unspecified)
Error in install.packages : type == "both" cannot be used with 'repos = NULL'


然后用R尝试安装，显示：ERROR: cannot extract package from ‘/Users/ming/Desktop/mvstats.tar’

请各位大神指教如何解决这个问题呀