label mean IQ
left ticks  0 10 20 30 40
height 20
width  30
3 1 *
3 2 * 
3 3 *
3 4 *
3 5 *
3 6 *
3 7 *
7 1 +
7 2 +
7 3 +
7 4 +
7 5 +
7 6 +
7 7 +
7 8 +
7 9 +
7 10 +
7 11 +
7 12 +
7 13 +
range 0 0 10 20
tags  3 boys 7 girls