Q. In correlation, which of the following tells us that we have a perfect positive relationship (Solved)
1. r = +1
2. all the points on the scatter diagram would fall on a straight line and the slope would be from bottom left to top right of the plot
3. the dots on the scatter diagram would fall in a straight line from top left-hand corner down to bottom right hand corner
4. both a and b
- d. both a and b