I used the code from a previously working rmarkdown program.
I updated my r and r studio to 3.6.1. when i try rendering it, i get the title slide but the rest stays as on html page. I have to scroll down.
after loading and restarting r studio, i updated all packages  rmarkdown, knitr, yaml.
title: "lecture_05_ Stats, Functions Graphing"
author: "xxxxxx"
date: "August 5, 2019"
output: slidy_presentation
##Quick Notes About Stats in R...

We have seen an introduction into stats with R, which is a necessary step in the analytical process.

Lets us review some packages within R to produce various statistical tasks.

We saw that the data structure and data types can determine the model constructed. Once the data is understood better, it can be used to generate some stats.

Make sure to import that data and grab a basic understanding before modeling:
library(datasets)
data = iris
str(data)
##Basic Package & Functions to Generate Various Statistical Calculations
 For a vast list of useful stats functions use the **statspackage:
_ this should give 3 slides. i only get 2!