MEDAL!
Mr. Potter’s physical science classes conducted an experiment to determine the density of aluminum. Here are the density values each class period came up with: 1st hour = 3.1 g/ml, 2nd hour = 3.05 g/ml, 3rd hour = 1.9 g/ml, 4th hour = 2.35 g/ml, 5th hour = 4.2 g/ml, and 6th hour = 4.0 g/ml. If Aluminum’s true density is 2.7 g/ml, how would you group the class values based on accuracy?

Question

MEDAL!
Mr. Potter’s physical science classes conducted an experiment to determine the density of aluminum.  Here are the density values each class period came up with:  1st hour = 3.1 g/ml, 2nd hour = 3.05 g/ml, 3rd hour = 1.9 g/ml, 4th hour = 2.35 g/ml, 5th hour = 4.2 g/ml, and 6th hour = 4.0 g/ml.  If Aluminum’s true density is 2.7 g/ml, how would you group the class values based on accuracy?

anonymous · Answer

a.
Group:  1st, 3rd, 5th, and 6th hours, with one recorded decimal place in their values
Group:  2nd and 4th hours, with two recorded decimal places in their values
b.
Group:  3rd and 4th hours, with values under the true density
Group:  1st, 2nd, 5th, and 6th hours, with values over the true density
c.
Group: 3rd hour, with a 1 value
Group:  4th hour, with a 2 value
Group:  1st and 2nd hours, with 3 values
Group: 5th and 6th hours, with 4 values
d.
Group all classes as accurate