Purpose: The intention of this lab was to show how inaccurate and imprecise your measurements could be if you did not have the right measuring tools. Procedure 1) Tennis Ball Diameter A) circumference method a) Take a piece of string and wrap it around the tennis ball in as straight of a path as possible b) Place this string on a ruler and record measurement c) The equation for diameter if a circle is C=pi …showed first 75 words of 806 total…

…showed last 75 words of 806 total…near the top of the building Conclusion: Precision in a measurement is how many significant figures you measuring device will read to but that does not necessarily mean that the measurement is accurate. If the correct measurement is 2.5cm and your measurement is 2.459678 then your measurement is more precise but not as accurate as 2.5. When there is no accepted value, error can be minimized by measuring many times many different ways and averaging the results.