The presented histogram illustrates the range of responses for the question about the importance of full color vision given by color blind and not color blind people. At first, we can notice that the variance of the responses is quite similar in general for each group of the people. Another observation is the number of respondents who chose 7 - 8 points out of 10 of the necessity scale is stand out of the trend. Let’s give a closer look at the graph. 25% of not color blind respondents, which is the highest number among them, thought that the full color vision is almost necessary – they marked it with the 8 out of 10 points. Another group - around 20% color blind respondents, which is the highest number among them, thought that full color vision is completely necessary. The number of respondents in each group with the opinion that the full color vision isn’t necessary at all is less than 5%. In summary, we can make the following conclusion. In general, each group of the peopl...