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Build the inspection rule

BOTIE

Convert later pressure readings into absolute deviations in saved-MAD units.
Ready to test
0 passed · 0 failed · 2 not run

An empty floor. Start with the information your machine needs.

Received result

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Examples, experiments and workspace controls
Live values

Connect a tool's inputs to see what it produces. You can try a branch before connecting it to Result.

Try your own inputs

Use a copy of the example to try your own data. Keep the problem's assumptions in mind, and predict the effect of a change before checking the output. You can also add another branch to compare two ways of doing the calculation.

Start at an output arrow, then click or drag to an input. Drag empty space to pan. Delete removes a selection. Ctrl/Cmd+Z undoes a change.
Context for this challenge

Convert later pressure readings into absolute deviations in saved-MAD units.

Botie has retained reference values and a validation-selected threshold.

Inspect the component calculation
Divide(
  Amount: Absolute value(
    Difference: Subtract(
      Starting value: Later pressure readings
      Value to remove: Saved reference median
    )
  )
  Divisor: Positive saved MAD
)
Examples and results
Later pressure readings
  1. 09
  2. 114
  3. 216
Saved reference median
10
Positive saved MAD
1
Required result
  1. 01
  2. 14
  3. 26
Later pressure readings
  1. 04
  2. 18
  3. 212
Saved reference median
6
Positive saved MAD
2
Required result
  1. 01
  2. 11
  3. 23
Try a fresh construction

This clears this draft, including its undo history. Earlier successful attempts stay recorded. Build again without opening hints to record an independent attempt.

Stuck? Inspect a worked construction

The tools below form one possible solution. You can assemble it, follow its signals, and undo that change to return to your own construction.

Assumptions and test precision

This is an alert procedure. Fault status comes from independent inspection, not the alert itself. Numerical tests allow a difference of 0.001. Lists and structures must also have the right shape.

Your last tested pieces can start the full construction. An existing draft there keeps its own pieces.

A low reading can need investigation too

This check uses the pieces from “Deploy the retained pressure-inspection rule”.

BOTIE

Botie checks four new sensor readings against a previously fitted centre and MAD. Flag absolute standardised deviations strictly above 3. Use the stored reference statistics and keep the output flags in reading order.
Later pressure readings
  1. 00
  2. 18
  3. 210
  4. 318
Saved reference median
10
Positive saved MAD
2
Fixed threshold
3

Use a number, text, or an array matching the requested result. For a matrix, put each row in brackets. Saving your prediction runs your current construction on these inputs and checks the earlier examples too.

Build a construction in the workspace above first. This case will test those pieces.

What must the inspection report retain to separate a changed reference, a changed threshold, and a newly confirmed fault?

Keep reading identity, reference version, score, threshold, alert, and later inspection outcome. Sample unalerted cases when measuring missed faults.

This is an alert procedure. Fault status comes from independent inspection, not the alert itself.

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