Free ratio analysis software for mac

For aeronautical students, engineers, RC hobbyists or anyone who loves airplanes,Airfoil Analysis offers the finest implementation of the classic Vortice-Panel method for airfoil analysis.
Main features:
- Arbitrary shapes
- NACA 4,5 digits airfoils.
- Up to 200 panels.
- Calculate aerodynamic coefficients.
- Plot angle of attack dependencies.
- Plot velocity and pressure fields.

ASCA Profile Analysis is a Macintosh EXCEL spreadsheet template created to perform the syndromic profile analysis of Adjustment Scale for Children and Adolescents scores.

Mac ChiSquare Analysis calculates chi-square statistic as well as phi, contingency, and kappa coefficients from up to a 10 x 10 table.

The chi-square test is used to compare the distributions of two independent samples. It is used with data in the form of frequencies. It is a nonparametric procedure that makes no assumptions about distribution shapes, variances, or levels of measurement (Diekhoff, 1996).

The chi-square test evaluates the correspondence between the expected and the observed number of cases in each of the cells of the variable by variable contingency table (Thompson, 1988). It is a test of whether or not a null hypothesis of no association should be rejected between the two independent variables.

If the chi-square test shows that there is a relationship between the two variables, then the contingency coefficient gives an indication of the degree of the relationship. (Bruning & Kintz, 1997). The contingency coefficient is similar in meaning to the correlation coefficient.

Cramers phi coefficient is a measure of association that is also similar to a correlation coefficient. It can assume a value between 0 and +1. See Sheskin (2000) for further detail.

Kappa is calculated when the rows and columns are symmetrical. Kappa is often used to examine inter-observer agreement and reflects the amount of agreement beyond chance (Norman & Streiner, 2000).

Chi-Square Analysis is a standalone Macintosh application that calculates the chi-square statistic for 2x2 to 10x10 contingency tables. Also calculates the contingency, phi, and kappa statistics.

Ratio Shackle widget takes one pair of numbers and finds all other pairs that have the same ratio. It is especially helpful in constraining proportions for images, web and video.
Once you have entered a pair of numbers, slide the scroll bar to find all whole-number variants of your ratio, or type in a specific value that you would like to constrain the proportions of.
Example of Use:
You have a 1200x1680 pixel image that you need to fit into a column that is 400 pixels wide:
- Enter 1200 and 1680 in the boxes on the left.
- The boxes on the right will tell you that the ratio is 5x7.
- Type 400 in the bottom right box to see that your image will be 285.714x400.
- If you only want to deal with whole numbers, slide the scroll bar to find the closest alternative. In this case you would see that your image could be 285x399.
Enhancements:
- Bug fix: No longer clears fields when return is pressed.

The Golden Ratio Calculator is a great dashboard widget for the Mac. The golden ratio is a well-known mathematical feature that is often used in graphic design because of its inherent asthetic qualitites. The Golden Ratio Calculator widget helps you match columns or split a container into two columns.

Enhancements
- The widget is now 23% smaller and is a little easier to use.