(a) Interpretation: The absolute error for the mean of each set is to be determined for following data. A B C D 61.45 3.27 12.06 2.7 61.53 3.26 12.14 2.4 61.32 3.24 2.6 3.24 2.9 3.28 3.23 The accepted value for the sets are A= 61.71, B = 3.28, C= 12.23, D = 2.75 Concept introduction: The following formula will be used for the calculation of the absolute error for the mean- E = x ¯ − x 1 Where, x ¯ = mean x 1 = accepted value Also, x ¯ = A 1 + A 2 ......... + A n n

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Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213
BuyFind

Principles of Instrumental Analysis

7th Edition
Douglas A. Skoog + 2 others
Publisher: Cengage Learning
ISBN: 9781305577213

Solutions

Chapter A1, Problem A1.2QAP
Interpretation Introduction

(a)

Interpretation:

The absolute error for the mean of each set is to be determined for following data.

A B C D
61.45 3.27 12.06 2.7
61.53 3.26 12.14 2.4
61.32 3.24 2.6
3.24 2.9
3.28
3.23

The accepted value for the sets are A= 61.71, B = 3.28, C= 12.23, D = 2.75

Concept introduction:

The following formula will be used for the calculation of the absolute error for the mean-

E=x¯x1

Where,

x¯ = mean

x1 = accepted value

Also,

x¯=A1+A2.........+Ann

Interpretation Introduction

(b)

Interpretation:

The percent relative error of each mean is to be determined.

Concept introduction:

The following formula will be used for the calculation of the percentage of relative error for the mean-

Er=x¯x1x1×100

Where,

x¯ = mean

x1 = accepted value

Also,

E=x¯x1

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