Histograms (Edexcel A-Level Mathematics): Flashcards

Continuous data

Frequency or count of data in that interval

No gaps - bars are adjacent

Interval or bin size

Frequency of data in that bin

Bin with highest bar/frequency

Left (negative), right (positive), or symmetric

Continuous vs categorical

Bars touch vs gaps between bars

$\frac{\text{Frequency}}{\text{Class width}}$

Width $\times$ frequency density

Split difference evenly ($0 \leq t < 10.5$, $10.5 \leq t < 20.5$)

Make final class double width of previous class