The phrase "average categories" is correct and usable in written English.
It can be used when discussing classifications or groupings that represent typical or mean values within a certain context.
Example: "In our analysis, we found that the average categories of customer spending varied significantly across different demographics."
Alternatives: "typical categories" or "mean categories".
The categories of verbal and performance IQ were in the "mentally retarded" and "average" categories, respectively.
Hence we dichotomized the original five response levels into "good" (above average; categories 1, 2) and "average or below" (categories 3-5).
From the small subset of significant results, we then transformed the regression coefficients to probabilities of being in the worse, average or better than average categories for each drug combination in each of the five mental state domains.
Given a clustering C of drugs, the average Category-based Score, C (C), corresponds to the average of the 'Category-based' measure for each pair of drugs in the clusters of C. Values of C (C) ranges between 0.0 and 1.0.
The typical one-term president generally falls into the "average" category, occasionally showing up as "above average".
At Oakwood the cost per prisoner place is said to be only £13,200 a year – a third of the average category C prison cost of £31,339 a year.
Customers like Mr. Dyer, whose energy use put him in the "below average" category, got frowns, but the utility stopped using them after a few customers got upset.
Actually, these three dishes were the choice picks from a recent dinner for four and while none of the remaining choices was a failure, most fell into the O.K. or average category.
Among those that made it into the "above average" category, there was a big gap between parenting terms at the Scottish and Welsh bodies, and the likes of Liverpool.
Far more powerful than the average Category 5, Haiyan was possibly the strongest tropical storm ever to make landfall.
In a 1996 survey of the bien-pensant professoriat organized by Arthur M. Schlesinger Jr., Ronald Reagan ranked in the bottom half of the "average" category.
