Simple Statistics EP. 2 | Histograms Explained: From Bars to the Normal Curve скачать в хорошем качестве

Simple Statistics EP. 2 | Histograms Explained: From Bars to the Normal Curve

Histograms are more than tidy stacks of rectangles. They are a window into one of the most powerful ideas in statistics: the Normal Curve, the well- known smooth bell-shaped curve to estimate percentages and make predictions. In Episode 2 of this series, we walk through a concrete example to build a histogram correctly on a density scale, where area—not height—does the talking. On this scale, each block’s area represents a percentage, and the total area equals 100%. By the end of this series, you’ll know how to read histograms properly, how to check whether data are plausibly normally distributed, and why the histogram is the first tool statisticians reach for before trusting the normal model. Bars first. Curve second. Insight follows.