Class Boundary/Examples/Arbitrary Example 1/Mistake

Source Work

2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.):

2021: Richard Earl and James Nicholson: The Concise Oxford Dictionary of Mathematics (6th ed.):

class boundaries


Mistake

For example, if intervals are $1.5 \le x < 2.0$; $2.0 \le x < 2.4$ .... with observations recorded correct to the nearest $0.1$, then the class boundaries are $1.45$, $1.95$, $2.45$, etc.


Correction

For the given class boundaries, the intervals are incorrect.

It is suspected that the following is intended:

For example, if intervals are $1.5 \le x < 2.0$; $2.0 \le x < 2.\color {red} 5$ .... with observations recorded correct to the nearest $0.1$, then the class boundaries are $1.45$, $1.95$, $2.45$, etc.


Sources

  • 2014: Christopher Clapham and James Nicholson: The Concise Oxford Dictionary of Mathematics (5th ed.) ... (previous) ... (next): class boundaries
  • 2021: Richard Earl and James Nicholson: The Concise Oxford Dictionary of Mathematics (6th ed.) ... (previous) ... (next): class boundaries
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