To analyze the PSM data, you need to use a statistical software or a spreadsheet tool that can generate the graphs and calculate the intersections. First, calculate the mean and standard deviation for each question, then plot the mean values of each question on a graph with price on the x-axis and percentage of respondents on the y-axis. Draw two lines from the origin to the too expensive point and from the too cheap point to the 100% mark. These lines represent the upper and lower boundaries of the acceptable price range. Additionally, draw a line from the cheap point to the expensive point, which is known as the indifference curve where respondents are indifferent between buying and not buying. To find the intersections of these lines, solve equations or use a software tool. The intersection of the upper and lower boundaries is called optimal price point (OPP) where demand is maximized. The intersection of indifference curve and upper boundary is known as point of marginal expensiveness (PME), where demand starts to decline. Lastly, find the intersection of indifference curve and lower boundary which is known as point of marginal cheapness (PMC), where demand starts to increase.