Dealing with Data by Arthur J. Lyon and W. Ashhurst (Auth.)

By Arthur J. Lyon and W. Ashhurst (Auth.)

Show description

Read Online or Download Dealing with Data PDF

Similar data modeling & design books

Modular Ontologies: Concepts, Theories and Techniques for Knowledge Modularization

This booklet constitutes a set of study achievements mature adequate to supply a company and trustworthy foundation on modular ontologies. It provides the reader a close research of the cutting-edge of the examine quarter and discusses the hot innovations, theories and methods for wisdom modularization.

Advances in Object-Oriented Data Modeling

Until eventually lately, details platforms were designed round assorted enterprise capabilities, akin to bills payable and stock keep an eye on. Object-oriented modeling, by contrast, constructions platforms round the data--the objects--that make up a few of the company features. simply because information regarding a selected functionality is proscribed to 1 place--to the object--the process is protected against the consequences of swap.

Introduction To Database Management System

Designed in particular for a unmarried semester, first direction on database structures, there are four points that differentiate our ebook from the remaining. simplicity - usually, the expertise of database platforms could be very obscure. There are

Extra resources for Dealing with Data

Sample text

And as before, we assume that the two pipette measurements of 25 ml and the normalities are essentially error-free. The maximum relative error in 25— p is ±5/24-06% or 0*2% approximately. Hence the maximum absolute error in x is ±0-2x0-09624/100 = ±0-0002 approximately. (b) N = 1-0 and p = 22-59. Hence or 25* = 2-41X1-0 x = 0-0964. The maximum relative error in 25— p is 5/2-41% or 2% approximately. The maximum absolute error in x is therefore 2% of 0-0964 or about ±0-002. Hence the two results are 0-0962 ±0-0002 and 0-096 ±0-002 and, clearly, the first result is ten times more precise than the second.

In other words, we have retained two guarding decimal places. Suppose that we have a larger number of terms, in fact a "generalized sum" of the form ±x±y±z±, .. ,in which there is considerable variation in the number of decimal places quoted. 4 that when all the values are correct to their last decimal place retention of two guarding places is still desirable, and in most cases adequate. e. that of the least accurate terms) ; let us say it is the kth decimal place after the point. If any terms contain digits beyond the (A:+2)th decimal place, then they should be rounded off correct to this place.

10. Calculations lead to the following values and possible errors. Round off according to the rules suggested in the text,t using powers of 10 where appropriate: (a) 54-37+0-0482. (b) 0-05638 + 0-0006. (c) 2-735 + 0-148. (d) 15,725 + 520. (e) 0-0003829 + 0-000027. (f) 7-82 + 0-074215. Answers 1. 2. 3. 4. 5. (a) +10%. (b) +0-1%. (c)+2%. (a) ±2g. (b) +8g. (c) +0-04 g. (a) + 5 V . (b) +0-01 V. (a) 12-5 + 0-1. (b) + 0-8%. (c) +0-8%. (d) + 3 Ω. (a) 5%. (b) No. (c) 5%. (d) 5%. (e) No. (f) 10%. (g) 10%.

Download PDF sample

Rated 4.62 of 5 – based on 20 votes