Derby speeds. How fast do horses run? Kentucky Derby winners top 30 miles per hour, as shown in the graph. This graph shows the percentage of Kentucky Derby winners that have run slower than a given speed. Note that few have won running less than 33 miles per hour, but about 95% of the winning horses have run less than 37 miles per hour. (A cumulative frequency graph like this is called an ogive.)

a) Estimate the median winning speed.

b) Estimate the quartiles.

c) Estimate the range and the IQR.

d) Create a boxplot of these speeds.

e) Write a few sentences about the speeds of the Kentucky Derby winners.

Transcribed Image Text:

% Below 100 80 60 60 40 20 32 34 36 Winning Speed (mph)