The table for sets of the replicate measurements is given below- A B C D E F 3.5 70.24 0.812 2.7 70.65 0.514 3.1 70.22 0.792 3.0 70.63 0.503 3.1 70.10 0.794 2.6 70.64 0.486 3.3 0.900 2.8 70.21 0.497 2.5 3.2 0.472 The value of mean and standard deviation is to be calculated for the above data sets. The 95% confidence interval for each data is to be determined and the value of interval mean is also to be determined. Concept introduction: The formula for the mean is given as- m e a n ( x ¯ ) = A 1 + A + 2 .................... + A n N = ∑ x i N .................. (1) The formula for the standard deviation is given as- s t a n d a r d d e v i a t i o n = ∑ ( x − x ¯ ) 2 N − 1 ..................….. (2)

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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 A1.12QAP
Interpretation Introduction

Interpretation:

The table for sets of the replicate measurements is given below-

A B C D E F
3.5 70.24 0.812 2.7 70.65 0.514
3.1 70.22 0.792 3.0 70.63 0.503
3.1 70.10 0.794 2.6 70.64 0.486
3.3 0.900 2.8 70.21 0.497
2.5 3.2 0.472

The value of mean and standard deviation is to be calculated for the above data sets. The 95% confidence interval for each data is to be determined and the value of interval mean is also to be determined.

Concept introduction:

The formula for the mean is given as-

mean(x¯)=A1+A+2....................+AnN=xiN .................. (1)

The formula for the standard deviation is given as-

standard deviation=(xx¯)2N1 ..................….. (2)

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