## R Shiny Apps for Introductory Applied Statistics (STA 215)

Organized by chapter of "Introductory Applied Statistics:
A Variable Approach," by Gabrosek and Stephenson
(book website)

Chapter of GS |
Link to app |
Subject of app |

Ch 2: One categorical variable |
Samp Dist Prop |
Sampling distribution of the sample proportion |

CI Prop |
Confidence interval for population proportion |

HT Prop |
Hypothesis test for population proportion |

Ch 3: One quantitative variable |
Descriptives |
Numerical and graphical summaries for the distribution of a quantitative variable |

Guess SD** |
Given four histograms and four standard deviation values,
can you match the distribution to the SD? |

CLT |
Central Limit Theorem |

Std Norm |
"Forward" and "Backward" calculations for the standard normal distribution |

t Dist |
Comparing the t Distribution to the Standard Normal Distribution (and t* to z*) |

CI Mean |
Confidence intervals for population mean |

HT Mean |
Hypothesis tests for population mean |

Ch 4: Two categorical variables |
Two way table |
Two-way tables of counts, observed vs. expected counts, and the chi-squared test statistic |

Chisq dist |
A graphical examination of the chi-squared distribution and calculating p-values from it |

Ch 5: Two quantitative variables |
Slope-Int Form |
Slope-intercept form of a line |

Least Squares |
The least squares regression line has the smallest sum of squared residuals out of all lines |

Ch 6: Independent Two-Group Data |
Indep Two-Group |
Simulating independent two-group data; Confidence intervals and hypothesis
tests for the difference in population means |

Type 1/2 Err |
Type 1 and 2 errors and power illustrated in the two-sample t test context |

Appendix |
Tables |
Calculates the vaues given in Tables A.1-A.7 |

**Made by Suchir Gupta

## Other apps for Intro Stats

Subject |
Link to app |
App description |

Ch 3 (GS): One quantitative variable |
Conf Level |
Excellent visualization of the interpretation of the confidence
level as the proportion of confidence intervals from repeated samples
that contain the parameter (click on Confidence Interval) |

Ch 5 (GS): Two quantitative variables |
Guess Corr |
Can you guess the correlation? (that is, match four scatterplots
to four correlation values) |

Lock5 Book |
StatKey |
Apps designed for simulation-based inference approach that
encompany the Lock5 book |