Your friend Benjamin measure the length of 3 glass boiling tubes using a 30 cm m

Question

Your friend Benjamin measure the length of 3 glass boiling tubes using a 30 cm measuring stick. Based on the data shown below determine the average deviation for Ben's length measurements. Imagine that you are asked to determine the density of a copper penny. You walk into the lab and on the front bench you find a 50 mL graduated cylinder, an electronic balance and a stack of 20 copper pennies. Thinking that this is going to be very easy you take a penny and measure its mass. You find that the penny has a mass of 2.51 g. You then set out to find the volume of the penny using the water displacement method. You fill the graduated cylinder with 20 mL of water, put the penny into the graduated cylinder and find that the penny displaces no discernible amount of water. What could you do to find the volume of a single penny?

Explanation / Answer

Q1.

n = 3 samples

so

Average = (Sum of smaples)/total species = (10.45+10.52+10.48)/3 = 10.4833

for the average mean deviation:

A.M.D = abs(ni - avg) / N = abs(10.45-10.4833)/3 + abs(10.52-10.4833)/3 +  abs(10.48-10.4833)/3 = 0.024433

the Avearge Devation = 0.024433

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