However, for a durable good like vaporware, it should be expected that more engineering-like, objective variables are the principal drivers of convenience perception. Convenience perception depends on the convenience of buying and using vaporware. These correlations are provided on a regional basis, consistent with the display of each region's perceptual map. Such correlations should be interpreted with caution, as the following notes suggest.
Correlations measure the strength of linear association between two variables.
A zero correlation implies that two variables are statistically unrelated to one another. These correlations are based on data from the last five quarters, to the extent that such data exist in the historical archives of this industry. Sample sizes are reported. This avoids using data from products with small market shares that might distort calculated correlations. Products with small market shares might have unusual or extreme associated performance and convenience perception driver-values.