Construct a relative frequency histogram of the data step by step and Data is given below

6.72, 6.77, 6.82, 6.70, 6.78 ,6.70 ,6.62 ,6.75, 6.66 ,6.66 ,6.64 ,6.76 ,6.73 ,6.80 ,6.72 ,6.76, 6.76 ,6.68 ,6.66 ,6.62 ,6.72 ,6.76 ,6.70 ,6.78, 6.76 ,6.67 ,6.70 ,6.72 ,6.74 ,6.81 ,6.79 ,6.78, 6.66 ,6.76 ,6.76 ,6.72