Labels the histogram with each of N, MEAN, and STDDEV that is
not SYSMIS. If all three are not SYSMIS and SHOW_NORMAL is
true, also draws a normal curve on the histogram. */
Labels the histogram with each of N, MEAN, and STDDEV that is
not SYSMIS. If all three are not SYSMIS and SHOW_NORMAL is
true, also draws a normal curve on the histogram. */