The table shows the distribution of the scores obtained by 160 shooters in a shooting competition. Use a graph sheet and draw an ogive for the distribution. (Take 2 cm = 10 scores on the X-axis and 2 cm = 20 shooters on the Y-axis).
Use your graph to estimate the following:
1) The median
2) The interquartile range.
3) The number of shooters who obtained a score of more than 85%.