Advanced Placement Calculus 2016 Graphical Numerical Algebraic Fifth Edition Test Prep Workbook Update
5th Edition
ISBN: 9780328909148
Author: Prentice Hall
Publisher: Prentice Hall
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Question 7
7.1
Consider the following quarterly demand levels for electricity (1000 megawatts) in Cape Town
from 1988 to 1991.
1988 1989 1990 1991
Jan-Mach 21
35
39
76
Apr-June
42
54
82
114
July-Sept 60
91
136
160
Oct-Dec
12
14
28
40
a) Find the least squares trend line for electricity demand usingEx = 0.
b) Find the seasonal index for each Quarter.
c) Estimate the demand for electricity for Quarter 4, 1992.
FORUM DESCRIPTION
DB1.1: Mathematical modelling is an important skill in egineering. If there are behaviors and phenomena that you want to model what would it be and why?
Unit 5 Lab
Background: Between the years of 1997 and 2003, the World Health Organization collected data on head circumference, arm circumference, and other body measurements for 8440 children from Brazil, Ghana, India, Norway, Oman and the USA. All of the children were healthy and breastfed by mothers who did not smoke. Children in the sample lived in socioeconomic conditions favorable to normal physical growth. Variables such as parental education level and income level were used to exclude children whose growth was “environmentally constrained”; however, low-weight full term babies were included if their mothers met socioeconomic and nutritional criteria. In short, the study design attempted to include healthy children from a wide range of ethnic and cultural groups whose home environments reasonably assured the conditions for healthy physical growth.
This data was used to produce growth charts that are part of every pediatrician’s toolkit for monitoring a child’s overall…
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