The phrase "a ratio of average" is not correct and may lead to confusion in written English.
It is typically used when discussing a comparison of average values, but it should be phrased more clearly.
Example: "The study revealed a ratio of the average income to the average expenditure of households."
Alternatives: "a comparison of averages" or "an average ratio".
The optimization criterion was a ratio of average annual revenue from the sale of petroleum products to the total costs (capital investments and operational costs) with restrictions on the product quality.
It is defined as a ratio of average effective UV irradiance calculated for unprotected skin to the average UV irradiance for skin protected by the test fabric.
While some errors are introduced when the XPD is calculated as a ratio of average power levels, the error should be rather small, and the obtained values are a good approximation of the real ones.
The WaSSI index is expressed as a ratio of average water demands (WD) to water supplies (WS) in the hydrologic basin under consideration: mathrm{WaSSI}=frac{mathrm{WD}}{mathrm{WS}} (1).
The ratio value for the whole cell was calculated as a ratio of average pixel fluorescence intensity at the 598 nm spectral window to that at the 513 nm, after subtraction of the background fluorescence.
Efficiency is analysed by calculating a ratio of average GDPHE to reduced CMR over the period.
Finite element analysis shows that an annular cell has a ratio of average-to-maximum displacement (RAMD) of 0.52 0.58 which is 58 76% higher than that of a conventional circular cell.
A ratio of averaged normalized gene expression value for each gene was generated by comparing expression in HEPG2 to hES-MSC cells.
And with a ratio of 20% average gains against average loss days of 1%, the trade-off is compelling.
Overall, Tag is in equilibrium at an expression rate that ranges less than two fold as a ratio of the average G2 to average G1 cell.
Ektacytometry uses an interference pattern to measure the deformability index, a ratio of the average length and average width of RBCs under shear stresses.
