HISTOGRAM subcommand (FREQUENCIES command)

HISTOGRAM displays a plot for each numeric variable named on the VARIABLES subcommand. By default, the horizontal axis of each histogram is scaled in frequencies and the interval width is determined by the largest frequency count of the variable being plotted.

  • The minimum specification is the HISTOGRAM keyword, which generates default histograms.
  • HISTOGRAM cannot be used with BARCHART.

MIN(n). Lower bound below which values are not plotted.

MAX(n). Upper bound above which values are not plotted.

FREQ(n). Vertical axis scaled in frequencies, where optional n is the scale. If n is not specified or if it is too small, FREQUENCIES chooses 5, 10, 20, 50, 100, 200, 500, 1000, 2000, and so forth, depending on the largest category. This is the default.

NORMAL. Superimpose a normal curve. The curve is based on all valid values for the variable, including values excluded by MIN and MAX.

NONORMAL. Suppress the normal curve. This is the default.


  • FREQUENCIES requests a histogram with a superimposed normal curve.