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The phrase "a substantial internal consistency" is correct and usable in written English.
It can be used when discussing the reliability or coherence of data, theories, or systems within a specific context.
Example: "The research findings demonstrated a substantial internal consistency, indicating that the results were reliable and could be replicated."
Alternatives: "a significant internal coherence" or "a considerable internal reliability."
Similar(59)
They indicate substantial internal consistency reliability for all short-form questionnaires.
In general these alpha coefficients are quite high indicating substantial internal consistency of the instrument.
The substantial internal consistency of the instrument was also supported by the findings regarding inter-item and item-total correlations.
Cronbach's alpha for the SASPA questionnaire was 0.875, easily surpassing the limit for substantial internal consistency in individual assessments.
Although we could not test validity of responses, we observed substantial internal consistency in views and themes across interviewees and health services.
Substantial internal consistency reliability was apparent for each of the two questionnaires (and domains), with that of the CPQ8-10 version being superior to that of the CPQ11-14 version.
It has a strong internal consistency (.81 to.90 in different studies).
All short forms demonstrated substantial to high internal consistency and substantial test-retest reliability for each of the the clinical groups studied (Table 8).
Moreover, Cronbach's alphas reflected a consistently high internal consistency.
A reliability test revealed an acceptable internal consistency (α = .79).79
* = A = internal consistency.
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Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com