Bell shaped percentile curve in R - Stack Overflow

I have a variable which has scores of the students. I am looking for the best possible way to plot the percentiles of the score. To give a glimpse of my data, [1] 26 30 27 28 27 27 29 28 3 12 27

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The Bell Curve: Intelligence and Class Structure in American Life (A Free Press Paperbacks Book): Herrnstein, Richard J., Murray, Charles: 9780684824291: : Books