Here is a random sample of the number of daily orders for a retail website and the corresponding histogram: Daily orders 80 107 34 23 34 73 27 56 56 56 90 65 94 45 67 45 89 45 95 46 89 45 89 56 12 45 34 6 Histogram of daily orders 10 Frequency 0 15 30 45 60 75 90 105 120 More Class (orders) a) Describe the histogram's general shape and state the modal class. b) Using only the manual method taught in lectures, calculate the interquartile range. c) Interpret the interquartile range, in the context of this question. SHOW YOUR WORKINGS. d) What are the units of measure for this data set