Frequency Tables and Histograms
To see how data is distributed, count it. A frequency table counts each category (value_counts). For numbers, group them into bins first (pd.cut or np.histogram); the counts per bin make a histogram.
Examplepython
Quick check
In a histogram, what does the height of a bar show?
Your turn: write the code
Count how many ages fall in each bin [0,18), [18,40), [40,100) and print the counts.
Finish the quick check (and any code exercise) to complete this lesson, or mark it done yourself.
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