Accession Number:

ADA063817

Title:

Conditional Joint Probabilities.

Descriptive Note:

Environmental research papers,

Corporate Author:

AIR FORCE GEOPHYSICS LAB HANSCOM AFB MASS

Personal Author(s):

• Gringorten,Irving I.

Report Date:

1978-10-02

Pagination or Media Count:

25.0

Abstract:

Formerly, for the solution of the conditional probability of a single predictand, its equivalent normal deviate END was obtained, under the assumption of multivariate normality, by linear regression on the ENDs of the predictors. For the joint probability of two predictands, the approach is to find the two corresponding ENDs by the same method, but in addition, to find the conditional correlation coefficient between the predictands. Such correlation has proved to be the well-known partial correlation. In a few test examples, the conditional correlation has decreased significantly from the more basic unconditional correlation. However, the conditional correlation has remained large enough to make the conditional probabilities significantly higher than the mere product of the two marginal probabilities. Author

Descriptors:

• *MULTIVARIATE ANALYSIS
• *PROBABILITY
• *METEOROLOGICAL DATA
• REGRESSION ANALYSIS
• SEASONAL VARIATIONS
• VISIBILITY
• DATA REDUCTION
• RAINFALL
• CORRELATION TECHNIQUES

Subject Categories:

• Meteorology
• Statistics and Probability

Distribution Statement:

APPROVED FOR PUBLIC RELEASE