These are the results of the Nerdy Personality Attributes Scale. The NPAS measures a single score, which could be described as "overall nerdiness". High scorers have personalities typical of the average person who describes themselves as a nerd, and low scorers do not.
Your score was . Scores range from a low of 30 to a high of 70. The exact average score is 50. People who score higher on the NPAS are more likely to identify as nerds. Below is a graph of what percent of people say yes when asked the question "Are you a nerd?" based on what their NPAS score was.
Only about 10% of people who score below 40 say that they are nerds, while 70% of those who score about 65 say they are nerds. The discriminating power of this scale is relatively low compared to some other psychological constructs. This is because the concept of what a nerd is relatively poorly defined in culture, and varies significantly based on individual interpretation.
All items on the NPAS are ones that discriminate highly between people who identify as nerds and those who do not, see the Development of the Nerdy Personality Attributes Scale article. 456 items were tested and only the best 26 were selected.