Extracted text: 87, 85, 91, 65, 70, 76, 81, 84, 85, 93, 99, 50, 78, 80, 86, 76, 74, 95, 81, 87, 90, 72, 76, 61, 85, 84, 78, 80. Make frequency table showing class limits, class boundaries, midpoints, frequencies, relative frequencies. (Use five classes) Draw a histogram and relative frequency histogram.