Your friendly companion for the whole course — clear explainers, practice quizzes that grade themselves, point-and-click calculators, and real data worth arguing about. No math anxiety allowed.
Every dataset tells a story. Ours leans into one of the biggest on Earth — the numbers behind animal agriculture. Same facts below, displayed as counters and a live ticker. Statisticians choose the display; the choice changes what you notice.
Rates from the FAO (2022). The counters are real arithmetic running in your browser — rate × seconds elapsed. That's all a "per second" statistic is.
Sources: Our World in Data; Food & Agriculture Organization of the UN (2023); Poore & Nemecek (2018), Science. We graph and unpack these all semester.
Short, friendly unit guides. No jargon walls — every term explained like a human would say it.
Practice true/false and multiple-choice with instant feedback. Different items than your Canvas quizzes, so it's real practice.
Mean to two-way ANOVA. Paste numbers, hit run, read a plain-English interpretation. Mirrors what you do in Google Sheets.
Drag a slider and watch a histogram change shape. See a correlation tighten before your eyes. Learn by playing.
Earn points and unlock badges as you practice. Your progress saves right in your browser — a little nudge to keep going.
The same data that teaches z-scores also teaches you something true about the world. Statistics with a point.
Each block ends in an exam. Click any unit to jump in — all 14 are live.
Saved in your browser. Take a quiz or run a calculator to earn XP and badges.
A sneak peek at Block 2. Look at the dot cloud — how tightly does it hug a line? Train your eye and you'll feel what r means before you ever compute it.