In an agreement between SpO2 of two groups with and without micropore in a pediatric population the values spotted is as below. Which of the following is true?

(d) The curve shows a regression line means co-relationBLAND-ALTMAN PLOT* Difference plot* A graphical method to compare two measurements techniques* The differences/ratios between the two techniques are plotted against the averages of the two techniques* Alternatively the differences can be plotted against one of the two methods, if this method is a reference or "Gold standard" method* Horizontal lines are drawn at the mean difference, and at the limits of agreement, which are defined as the mean difference plus and minus 1.96 times the standard deviation of the differences* Interpretation of Bland-Altman Plot:- Perfect correlation if the points lie perfectly along any straight line- Regression line indicates Correlation: (See previous page)- Perfect agreement only if they lie perfectly along the line of equality- Line of equality does not indicate perfect agreement: (See above)