Below is the full question

Exercise 1: The data below shows the grade distribution of a mineral deposit (% ): (a) Plot the HISTOGRAM; (b) frequency polygon; (c) cumulative frequency graph Interval (%) Frequency Relative Cumulative frequency frequency 0.1 - 5.0 2 0.067 0.067 5.1 - 10.0 2 0.067 0.134 10.1 - 15.0 4 0.133 0.267 15.1 - 20.0 0.233 0.500 20.1 - 25.0 0.167 0.667 25.1 - 30.0 0.167 0.834 30.1 - 35.0 3 0.100 0.934 35.1 - 40.0 2 0.067 1.000 E 30 1.00