Now we sort the observations into the appropriate classes by tallying. In order to keep track of what has been tallied, some people put an X by the number in the raw data table once it has been tallied. If a point falls on the boundary between two classes, it is placed in the greater class. A data point of 70 is placed in the class 70-75, not the class 65-70.
Intervals | Tally |
65 - 70 | \\ |
70 - 75 | \\\\ \\ |
75 - 80 | \\\\\\\\ \ |
80 - 85 | \\\\\\\\\\\\\\\\\\\\\\\\ \ |
85 - 90 | \\\\\\\\\\\\\\\\ \\\\ |
90 - 95 | \\\\\\\\\\\\ \\\ |
95 - 100 | \\\\\\\\ \\\ |
100 - 105 | \\\\\\\\ |
105 - 110 | \\\\ |
110 - 115 | \\\\ |