# 1/19/2022

## Lecture - Open Google Drive Stat206-DataAnalysis\S2022\2ePowerPoint\Sec0.1-2R.pptx

## Chapter 0

- Review of statistical inference
- Null hypothesis
- Alternative hypothesis
- Hypothesis test
- Sampling distribution
- Critical region
- Significance level
- Type I and Type II errors
- Null distribution
- P-value

- Confidence intervals for a population mean
- When the population standard deviation is known (not useful)
- When the population standard deviation is unknown (t interval)
- Interpreting CI

## Introduction to R (see Day1.R)

- Open and demo Chapter0.Rmd (R Markdown file for Chapter 0)
- Reading data from a file - importing Excel files (read Day1-S2022.csv into R)
- Viewing the data
- Sorting data
- Descriptive statistics for the pulse data
- Graphical displays for the pulse data

You can also check out the free labs at Open Intro for review or to get started with R

## Please read Section 1.1 for class on Friday