Z-Scores and Pearson Correlation: If we have scores that are expressed as standardized scores -- Z-Scores with a mean of zero and a variance of one -- then the formula for the Pearson Correlation becomes particularly simple.
PNG Formats. .PNG files in logo design and when you should use them. PNG is an acronym for Portable Network Graphics. PNGs are bitmpapped (raster/pixel based) image formats that can be used instead of GIF images or JPGs. PNG logo images are superior to other pixel based formats as they employ a âlosslessâ data compression system.
Launch Sothink Logo Maker, and then select a favorite logo template to create the png logo. You can directly enter the desired text. For the logo image, Logo Maker provides over 2500 logo graphics, you can select the target image and replace it with any one from the Resources library. Importing external images is also allowed when create the png logo. What's more, Logo Maker supports importing SWF and extracting its vector graphics. Set Gradient effect to the left image, and set Reflection effect to the text Logo Maker.