Please show the answer and solution step by step in a paper/Microsoft word so that it will be explain well and in order for me to understand well unlike to excel ma'am/sir. Pleasee if possible in the paper/word. Thank you very much!

50 students in Statistics took their final examination. The data were quantified as shown in othe table below. Find the range, mean, the median, the mode, standard deviation and variance of their scores . Class Intervals Frequency 86 - 90 8 81 - 85 76 - 80 71 - 75 66 - 70 10 61 - 65 56 - 60 AW A 51 - 55