Science

ChemistryPrinciples of Instrumental Analysis(a) Interpretation: The least-squares estimates of the slope and intercept for the given data set should be calculated. Concept introduction: The least-squares estimates of a set of data behaving linearly are defined as follows: y = m x + b When y and x are variables, m is the slope of the line and b is the y intercept . m can be calculated using: m = S x y S x x where, S x y = ∑ x i y i − ∑ x i ∑ y i N and S x x = ∑ x i 2 − ( ∑ x i ) 2 N Similarly, b can be calculated using: b = y ¯ − m x ¯ where, y ¯ = ∑ y i N and x ¯ = ∑ x i N ( x i and y i are individual pairs of data for x and y and N is the number of data pairs)Start your trial now! First week only $4.99!*arrow_forward*

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7th Edition

Douglas A. Skoog + 2 others

Publisher: Cengage Learning

ISBN: 9781305577213

Chapter 1, Problem 1.10QAP

Interpretation Introduction

**(a)**

**Interpretation:**

The least-squares estimates of the slope and intercept for the given data set should be calculated.

**Concept introduction:**

The least-squares estimates of a set of data behaving linearly are defined as follows:

Interpretation Introduction

**(b)**

**Interpretation:**

Standard deviations of the slope and intercept and the standard error of the estimates for the given data set should be calculated using the LINEST function in EXCEL.

**Concept introduction:**

In order to use the LINEST function in EXCEL to obtain statistical values for a given data set, the following command should be typed on an EXCEL spread sheet, in which the given data is already been typed in two columns.

Interpretation Introduction

**(c)**

**Interpretation:**

The

**Concept introduction:**

The general formula to calculate the

Interpretation Introduction

**(d)**

**Interpretation:**

The glucose concentration and its standard deviation of a serum sample, which gave an absorbance of 0.350 should be calculated.

**Concept introduction:**

To determine an unknown glucose concentration

The standard deviation of