120 100 80 60 40 20 + + 31 32 33 34 35 36 37 38 Winning Speed (mph) Percentage
Unitary Method
The word “unitary” comes from the word “unit”, which means a single and complete entity. In this method, we find the value of a unit product from the given number of products, and then we solve for the other number of products.
Speed, Time, and Distance
Imagine you and 3 of your friends are planning to go to the playground at 6 in the evening. Your house is one mile away from the playground and one of your friends named Jim must start at 5 pm to reach the playground by walk. The other two friends are 3 miles away.
Profit and Loss
The amount earned or lost on the sale of one or more items is referred to as the profit or loss on that item.
Units and Measurements
Measurements and comparisons are the foundation of science and engineering. We, therefore, need rules that tell us how things are measured and compared. For these measurements and comparisons, we perform certain experiments, and we will need the experiments to set up the devices.
Derby speeds 2011 How fast do horses run? Kentucky
Derby winners top 30 miles per hour, as shown in this
graph. The graph shows the percentage of Derby winners
that have run slower than each given speed. Note that few
have won running less than 33 miles per hour, but about
86% of the winning horses have run slower 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
d) Create a boxplot of these speeds.
e) Write a few sentences about the speeds of the
Kentucky Derby winners.
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