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The six worst estimates are shown in pink on the stem and leaf plot:

These six estimates are the most different from 500. Specifically, they differ from 500 by more than 100; they are either less than 400 or greater than 600.
The other 94 estimates differ from 500 by 100 or less. These 94 estimates fall between 400 and 600, inclusive.
We'll refer to these inclusive ranges of values as intervals, and use such intervals to classify the estimates:
| Ninety-four of 100 (94/100) estimates fall between 400 and 600 (inclusive). |
| Six of 100 (6/100) estimates fall outside of this interval. |
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