title: How can I visualize data to show performance and variation in performance
body: <p>I wanted to know the how I could plot what I'm seeing in my data.</p>
  <p>For context, I have the numerical performance score each individual student has received in 9 different subjects (my snapshot only includes 4 of these). I have this data for around 50 students. One fact that's of interest to me, is whether there is between subject variation for a student in their performance. For example, I want to know if students are either consistently high or low performers across all subjects or if there is some variation in their performance.</p>
  <p>How could I plot this?</p>
  <pre><code>student_id  Math_score  English_score  Social_studies_score  Chemistry_score
  42             20            15              16                    12
  41             23            23              14                    18
  40             6             12              20                    23
  32             18             9              23                    22
  34             15            21              23                    21
  45             10             8              22                    18
  39             20            12              18                     6
  10             23            19              17                    14
  
  </code></pre>
  <p>Thanks!</p>