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Describing Data: Probability & Statistics: Uncharted

Courses Probability & StatisticsDescribing Data

Describing Data

One number for many: build displays, balance the mean, resist the outlier, and read charts with a skeptic's eye.

Probability & Statistics
Unit 2 of 12
20 lessons
156 min
420 XP

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Lessons

20 total

1One Number for ManyInterpret the mean as the equal share of a group total.InteractiveConcept7 min20 XPOpen
2Balance the MeanAdjust one value to make a group reach a target mean.InteractiveConcept8 min20 XPOpen
3The Median ResistsCompare how the mean and median respond to one distant value.InteractiveConcept8 min20 XPOpen
4Mode and ShapeUse modes and peaks to notice common values and mixed groups.InteractiveConcept6 min20 XPOpen
5Center WorkoutFind the mean or median of varied integer datasets.InteractivePractice9 min20 XPOpen
6Weigh the MeanCompute a weighted mean when parts contribute different shares.InteractiveConcept8 min20 XPOpen
7Build the HistogramTurn a survey tally into bars whose heights preserve every response.InteractiveConcept8 min20 XPOpen
8Bin It DifferentlyRecognize how histogram bin width can reveal or hide a gap.InteractiveConcept7 min20 XPOpen
9Shares of a WholeConnect category counts with their proportional shares in a pie display.InteractiveConcept8 min20 XPOpen
10Read the SurveySelect every category whose bar exceeds a stated cutoff.InteractiveConcept8 min20 XPOpen
11Spread Tells MoreCompare datasets with the same mean by measuring their ranges.InteractiveConcept8 min20 XPOpen
12The Middle HalfLocate the first and third quartiles that fence the middle half of ordered data.InteractiveConcept8 min20 XPOpen
13Five Numbers, One BoxConnect a box plot with its five-number summary.InteractiveConcept7 min20 XPOpen
14Outlier HuntIdentify the observation that sits far away from an overall scatter trend.InteractivePractice8 min20 XPOpen
15Same Center, Different StoryUse spread to choose between two services with the same mean.InteractiveConcept7 min20 XPOpen
16Displays WorkoutBuild, read, and summarize several compact datasets.InteractivePractice9 min20 XPOpen
17Center and Spread WorkoutCompute centers while keeping the shape and spread of each set in view.InteractivePractice9 min20 XPOpen
18Don't Be FooledRecognize display choices that exaggerate or conceal patterns.InteractiveConcept7 min20 XPOpen
19Describe to DecideChoose a summary that answers a salary decision honestly.InteractiveConcept7 min20 XPOpen
20Statistics Mastery CheckBuild one dot plot that satisfies both mean and median constraints.InteractiveMastery check9 min40 XPOpen

Chance Counting Without Listing