AP Statistics: Introduction to Variables
6K views · Sep 28, 2022 stattrek.com
This video describes the use of variables in AP Statistics. It answers three questions: What is a variable? What is the difference between categorical and quantitative variables? And what is the difference between discrete and continuous variables? View written lesson here: https://stattrek.com/descriptive-statistics/variables
AP Statistics: Populations and Samples
20K views · Sep 29, 2022 stattrek.com
AP Statistics is all about the study of data sets. This lesson describes two important types of data sets - populations and samples. Along the way, we'll introduce simple random sampling, the main method used in AP Statistics to select samples. View written lesson here: https://stattrek.com/sampling/populations-and-samples
AP Statistics: Mean and Median (measures of central tendency...
10K views · Oct 1, 2022 stattrek.com
The mean and the median are summary measures used in AP Statistics to describe the most "typical" value in a set of values. This video explains how to compute each measure and when to use each measure. (Statisticians sometimes refer to the mean and median as measures of central tendency.) View written lesson here: https://stattrek.com/descriptive-statistics/mean-median
AP Statistics: Measures of Variability
7K views · Oct 1, 2022 stattrek.com
Statisticians use summary measures to describe the amount of variability or spread in a data set. For AP Statistics, students are expected to know about four measures of variability: the range, the interquartile range (IQR), variance, and standard deviation. This video describes each measure and shows how to compute a value for each measure. View written lesson here: https://stattrek.com/descriptive-statistics/variability
AP Statistics: Percentiles, Quartiles, z-Scores (measures of...
9K views · Oct 6, 2022 stattrek.com
Statisticians often talk about the position of a value, relative to other values in a set of data. The most common measures of position are percentiles, quartiles, and standard scores (aka, z-scores). This video shows how to compute each measure of position, with clear, step-by-step examples. View written lesson here: https://stattrek.com/descriptive-statistics/measures-of-position
AP Statistics: Patterns in Data
5K views · Oct 6, 2022 stattrek.com
Graphic displays are useful for seeing patterns in data. This video lesson shows how properties of data sets - center, spread, shape, clusters, gaps, and outliers - are revealed in charts and graphs. Features clear, easy-to-understand examples. View written lesson here: https://stattrek.com/statistics/charts/data-patterns
AP Statistics: What is a dotplot?
4K views · Oct 6, 2022 stattrek.com
Dotplots are charts that compare frequency counts within groups. Using easy-to-understand examples, this video lesson explains (1) how to read a dotplot and (2) how to construct a dotplot. View written lesson here: https://stattrek.com/statistics/charts/dotplot
AP Statistics: What are bar charts and histograms?
9K views · Oct 6, 2022 stattrek.com
This video lesson tells you everything you need to know about bar charts and histograms - what they are, when to use them, how they differ, how to construct them, and how to read them. Key points are reinforced with easy-to-understand examples. View written lesson here: https://stattrek.com/statistics/charts/histogram
AP Statistics: What is a stemplot?
6K views · Oct 6, 2022 stattrek.com
This video lesson tells you everything you need to know about stemplots - what they are, when to use them, how to construct them, and how to read them. Key points are reinforced with easy-to-understand examples. View written lesson here: https://stattrek.com/statistics/charts/stemplot
AP Statistics: Binomial Probability Distribution
40K views · Sep 30, 2022 stattrek.com
This video tells you everything you need to know about the binomial probability distribution in AP Statistics. By the end of the video, you will understand binomial experiments, you will recognize binomial random variables, you will know how to compute binomial probability, and you will know what a binomial distribution is. All explained in plain English. View written lesson here: https://stattrek.com/probability-distributions/binomial See online binomial calculator here: https://stattrek.com/online-calculator/binomial
AP Statistics: Cumulative Frequency Plots
3K views · Oct 11, 2022 stattrek.com
A cumulative frequency plot is a way to display cumulative information graphically. It shows the number, percentage, or proportion of observations that are less than or equal to particular values. This video tells you everything you need to know about cumulative frequency plots for AP Statistics. View written lesson here: https://stattrek.com/statistics/charts/cumulative-plot
AP Statistics: What is a scatterplot?
4K views · Oct 11, 2022 stattrek.com
A scatterplot is a graphic tool used to display the relationship between two quantitative variables. This video lesson tells you everything you need to know about scatterplots- what they are, when to use them, how to construct them, and how to read them. Key points are reinforced with easy-to-understand examples. View written lesson here: https://stattrek.com/statistics/charts/scatterplot
AP Statistics: How to Compare Data Sets
6K views · Oct 11, 2022 stattrek.com
Common graphical displays (e.g., dotplots, boxplots, stemplots, bar charts) can be effective tools for comparing data from two or more data sets. This video shows how to use various graphs to compare data sets in terms of center, spread, shape, and unusual features. (This is a skill that students are expected to master for the Advanced Placement Statistics Exam.) View written lesson here: https://stattrek.com/statistics/charts/compare-data-sets