Final answer:
Bins generally do not include numbers on both the left and right endpoints; values on the right boundary are included in the interval, but values on the left boundary are not, except for the first interval.
Step-by-step explanation:
The statement that bins include all numbers, including the left and right end points, is generally false. In the context of histograms and statistics, the convention is that data values falling on the right boundary of a bin are included in that class interval, while those on the left boundary are not, except for the first interval where both boundaries typically include the values. This convention prevents double-counting values that could otherwise fall into two adjacent class intervals.