According to the textbook context, when the correlation coefficient (rxy) is positive, it indicates positive correlation. The text states: 'Fig. 6.1 shows a scatter around an upward rising line indicating the movement of the variables in the same direction. When X rises Y will also rise. This is positive correlation.' Additionally, it mentions that 'Both X and Y move in the same direction' for positive correlation. Therefore, when Y increases, X also increases. Option (ii) describes negative correlation where variables move in opposite directions. Option (iii) describes no correlation where there is no linear relation between variables.