To continually increase the speed of computers, electrical engineers are working on ever-decreasing scales.

The size of devices currently undergoing development is measured in nanometers $(\mathrm{nm})$, or $10^{-9} \times$ meters. Engineers fabricating a new transmission-type electron multiplier ${ }^{2}$ created an array of silicon nanopillars on a flat silicon membrane. Subsequently, they measured the diameters $(\mathrm{nm})$ of 50 pillars.

62	68	69	80	68	79	83	70	74	73
74	75	80	77	80	83	73	79	100	93
92	101	87	96	99	94	102	95	90	98
86	93	91	90	95	97	87	89	100	93
92	98	101	97	102	91	87	110	106	118

Group these measurements into a frequency distribution and construct a histogram using (60,70], (70, 80],(80,90],(90,100],(100,110],(110,120], where the right-hand endpoint is included but the left-hand endpoint is not.