The frequency table below will be used to make a histogram. Test Score Number of Students 1 - 10 1 11 - 20 0 21 - 30 1 31 - 40 1 41 - 50 2 51 - 60 4 61 - 70 6 71 - 80 11 81 - 90 5 91 - 100 4 What is an appropriate scale and interval for this histogram?