Function predictionEffort

predictionEffort(
    entryEffort?: number,
    perLetterEffort?: number,
    avgSelections?: number,
    lettersToType?: number,
): number
Calculate effort to access a word via prediction

When prediction is available, the user:
1. Navigates to the spelling/keyboard page (entryEffort)
2. Types first 1-3 letters to trigger predictions
3. Selects from 1-3 predictions (average selections)
Parameters
- entryEffort: number = 10
  Effort to reach the spelling/keyboard page
- perLetterEffort: number = 2.5
  Average effort per letter on the keyboard
- avgSelections: number = 1.5
  Average number of predictions to check (default 1.5)
- lettersToType: number = 2
  Letters to type before prediction appears (default 2)
Returns number
Prediction effort score
- Defined in src/utilities/analytics/metrics/effort.ts:121