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.
For this data set, number of individuals surveyed, n=106. The sample mean is 98.2 o F. The sample standard deviation s=0.62289643. This sample mean is the best point estimate of the population mean. The degrees of freedom is 106-1=105. The sample standard deviation is 0.62289643. The area (0.05) of the distribution in two tails given 105 degrees of freedom gives a critical t value of 1.984.