Stating Ranges for IRIS Ratios (End Points)
Should we always explicitly state the usual range for an IRIS ratio if asked about a result being usual or not? I'm mostly concerned about stating the endpoint wrong, how critical are they of this? For example I noticed in Spring 2018 #15 accepted answers were
- The ratio is >= 100%, so it is not within the usual values
- The ratio is higher than 100%, making this an unusual value.
- The ratio is less than 100% so it is in the usual range
The first answer says greater than or equal to, the second says greater than, and the third says greater than or equal to
Comments
They may have overlooked this issue in their answer key in this problem. But you never know. You will be safer to state the correct endpoint.