Concordia University Mass Calibration and Error Analysis Lab Report

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Concordia University Mass Calibration and Error Analysis Lab Report
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Concordia University Mass Calibration and Error Analysis Lab Report
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FALL 2019, LAB ACTIVITY 1: MASS CALIBRATION

MASS CALIBRATION
Author’s Name
Concordia University

1

FALL 2019, LAB ACTIVITY 1: MASS CALIBRATION

2

Abstract
The purpose of the experiment is to calibrate a piece of equipment that will be used in
laboratory experiments. This is to ensure that the equipment is working properly. The lab entails
an exploration of experimental uncertainties and error analysis. It is important in science because
it involves a lot of experiments that require accuracy and precision especially when measuring
instruments are involved.
Nomenclature
g

Grams

±

Plus, or Minus

Introduction
The experiment involves the use of the digital and analog laboratory balance to attempt to
measure a laboratory mass of 200g to sub-resolution precession. We began the laboratory by
eliminating the uncertainties, then calculating the errors and lastly comparing the results. There
was 5 trial for the experiment. The measurements obtained in the lab were entered into the excel
file with Each measurement in a different column. The mean and the standard deviation were then
computed in excel using the average”=AVERAGE” and “STDEV.S” function in excel.

Results and discussion
Table 1. Mass in grams of an object measured using a digital and analog balance
Balance type
Trials
1

Digital
Mass (g)
200.057

Analog
200.5

FALL 2019, LAB ACTIVITY 1: MASS CALIBRATION
2
3
4
5
Average

200.010
199.850
200.560
201.504
200.3962

Standard deviation 0.60276

3

201.0
199.5
200.5
203.5
201.0
1.34164

The mean mass obtained from the digital balance is 200.37g while the mean mass obtained
from the analog balance is 201.0g. The standard deviation for the digital balance is 0.60276 while
the triple balance is 1.34164.
Error Analysis:
Digital balance
Systematic errors

Analog Balance

200.3962 − 200
𝑋100%
200

201.0 − 200
𝑋100%
200

= ...

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