Module 2â Unit 2 Industrial Insulation Phase 2 2 Orthographic Projections Revision 2.0, August 2014 Introduction Orthographic projection is a means of representing a three dimensional object on a plane surface.Two principal planes are used in orthographic projection, one horizonta l and one vertical.odule 2â Unit 2 Industrial Insulation Phase 2 15 Orthographic Projections Revision 2.0, August 2014 2.4 Dimensioning The addition of sizes and measurements to a drawing is known as âdimensioningâ. Dimensions tell us the exact distance between two points of surfaces, therefore it is essential that they are legible.
The value of a correlation coefficient ranges between -1 and 1. The greater the absolute value of a correlation coefficient, the stronger the linear relationship. The strongest linear relationship is indicated by a correlation coefficient of -1 or 1. The weakest linear relationship is indicated by a correlation coefficient equal to 0.
In statistics, correlation is connected to the concept of dependence, which is the statistical relationship between two variables. The Pearsonâs correlation coefficient or just the correlation coefficient r is a value between -1 and 1 (-1â¤râ¤+1). It is the most commonly used correlation coefficient and valid only for a linear relationship between the variables. If r=0, no relationship exist, and if râ¥0, the relation is directly proportional; the value of one variable increases with the increase in the other.