The phrase "average scale score" is correct and usable in written English.
It can be used in contexts related to assessments, tests, or evaluations where a numerical score is averaged across a scale.
Example: "The average scale score for the students in the math assessment was significantly higher than last year's results."
Alternatives: "mean score" or "average test score".
In the sixth grade, the average scale score gain in reading was only 6.34, and for seventh graders only 8.58.
Mr. Tobias also said he was pleasantly surprised at the average scale score increase between spring and late summer among third and fourth graders on the reading test.
England has dropped from third to 19th in the international reading literacy league table since 2001, with an average scale score of 539.
I do not believe that because the average scale score went from 3.97 (taken from students' third grade test scores) to 3.92 (their fourth grade scores) a teacher is necessarily a poor teacher, but in this case, she ended up in the 6th percentile for this particular year due to a statistically insignificant change.
Average scale score for this sample was 3.8 (range 0-12).
Scores for missing items were imputed using the average scale score from the completed items.
Average scale scores based on the experience questionnaire can be found in Figure 1.
Average scale scores remained at the improved levels through follow-up.
Subsequently, we calculated average scale scores with 95% confidence intervals (95% CIs) for all the scales in the experience questionnaire and compared the averages for the five most frequently reported tumour types using ANOVA.
Towards this end, Table 2 shows that, although the mean scores for QLQ – C30 indicated that the patients had poor to average scale scores, only 5.8%too 11.2% had scores that met the ≤ 33% criterion for problematic functioning, while 12.0% to 40.0% met the >66% criterion for more severe symptoms.
