# Content Update: December 2017 (ATTACK of the STATS)

For all of you who've been *pleading* with us for new stats content, December was your month! Most of our new content was around statistics, and we also added some interesting new items to our Career series, as well as a few History and Math items. Enjoy!

Domain | Subject | Title | Content kind | URL |

Arts and humanities | Art of the Americas to World War I | Richard Caton Woodville, War News from Mexico | Video | |

Arts and humanities | Special topics in art history | A race against time: manuscripts and digital preservation | Video | |

Arts and humanities | Special topics in art history | Saving Venice | Video | |

Arts and humanities | World history | Focus on state-building: Empires | Exercise | |

College, careers, and more | Careers | Director of product - How I got my job and where I'm going | Video | |

College, careers, and more | Careers | Director of product - What I do and how much I make | Video | |

College, careers, and more | Careers | VP of wealth management - How I got my job and where I'm going | Video | |

College, careers, and more | Careers | VP of wealth management - My budget and planning for the future | Video | |

College, careers, and more | Careers | VP of wealth management - What I do and how much I make | Video | |

College, careers, and more | Careers | School social worker - What I do and how much I make | Video | |

College, careers, and more | Careers | School social worker - How I got my job and where I'm going | Video | |

College, careers, and more | Careers | School social worker - My budget and planning for the future | Video | |

Math | 2nd grade | Estimate lengths (US Customary units) | Exercise | |

Math | Algebra I | Quadratics: unit review | Exercise | |

Math | Algebra I | Functions: unit review | Exercise | |

Math | AP Statistics | Binomial vs. geometric random variables | Exercise | |

Math | AP Statistics | Calculating a one-sample z interval for a proportion | Exercise | |

Math | AP Statistics | Combining random variables | Exercise | |

Math | AP Statistics | Comparing with z-scores | Exercise | |

Math | AP Statistics | Conditions for valid confidence intervals | Video | |

Math | AP Statistics | Confidence interval simulation | Video | |

Math | AP Statistics | Cumulative geometric probability | Exercise | |

Math | AP Statistics | Describing distributions | Exercise | |

Math | AP Statistics | Finding the critical value z* for a desired confidence level | Exercise | |

Math | AP Statistics | Finding probabilities with sample proportions | Exercise | |

Math | AP Statistics | Mean and standard deviation of a binomial random variable | Exercise | |

Math | AP Statistics | Normal conditions for sampling distributions of sample proportions | Video | |

Math | AP Statistics | Probability with discrete random variables | Exercise | |

Math | AP Statistics | Probability of sample proportions example | Video | |

Math | AP Statistics | Sample size and margin of error in a one-sample z interval | Exercise | |

Math | AP Statistics | Sampling distribution of sample proportion part 1 | Video | |

Math | AP Statistics | Mean and standard deviation of sample proportions | Exercise | |

Math | Statistics and probability | Biased and unbiased estimators | Exercise | |

Math | Statistics and probability | Calculating binomial probability | Exercise | |

Math | Statistics and probability | Combining normal random variables | Exercise | |

Math | Statistics and probability | Conditions for confidence intervals worked examples | Video | |

Math | Statistics and probability | Conditions for a one-sample z interval for a proportion | Exercise | |

Math | Statistics and probability | Confidence intervals and margin of error | Video | |

Math | Statistics and probability | Critical value (z*) for a given confidence level | Video | |

Math | Statistics and probability | Determining sample size based on confidence and margin of error | Video | |

Math | Statistics and probability | Example constructing and interpreting a confidence interval for p | Video | |

Math | Statistics and probability | Finding probabilities with sample means | Exercise | |

Math | Statistics and probability | Geometric probability | Exercise | |

Math | Statistics and probability | Interpreting confidence level example | Video | |

Math | Statistics and probability | Introduction to sampling distributions | Video | |

Math | Statistics and probability | Mean (expected value) of a discrete random variable | Exercise | |

Math | Statistics and probability | Mean and standard deviation of sample means | Exercise | |

Math | Statistics and probability | The normal condition for sample proportions | Exercise | |

Math | Statistics and probability | Probability in density curves | Exercise | |

Math | Statistics and probability | Probability in normal density curves | Exercise | |

Math | Statistics and probability | Sample means and the central limit theorem | Exercise | |

Math | Statistics and probability | Sample statistic bias worked example | Video | |

Math | Statistics and probability | Sampling distribution of sample proportion part 2 | Video | |

Math | Statistics and probability | Standard deviation of a discrete random variable | Exercise |

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