Elementary Statistics
12th Edition
ISBN: 9780321836960
Author: Mario F. Triola
Publisher: PEARSON
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Chapter 10.6, Problem 16BSC
To determine
To construct: The
To identify: The best model.
To predict: The value for the year 2010.
To check: The predicted value close to the actual value of 11,655 or not.
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a)Given the data 63, 64, 66, 67, 67, 69, 71, 72 are the units of actual sales of TV in the last eight periods. Find the forecast for the ninth period using simple exponential smoothing.Use α = 0.3 and initial forecast using simple average of last eight months.
b)The sales of a company (in million dollars) for each year are shown in the table below. Find the linear sales trend line.x (year) 2005 2006 2007 2008 2009y (sales) 12 19 29 37 45
plz i need these answers within 4 hrs i need to submit them do the questions manually without using excel or minitab
6. The data shows the number of books published with LGBTQ main characters in the U.S.
a. Create a scatterplot.
Number of Books Published
in the United States with
LGBTQ Main Characters
24
42
45
78
82
110
Source: Malinda Lo, Scholastic Math
Year
2013
2014
2015
2016
2017
2018
b. Determine whether an exponential model,
a logarithmic model, or a linear model is the
best choice for the data.
Find
equation
best r- value.
and find the
Siena Ltd attempts to find the trend of its sales over the past five years. Siena is considering which model that best represent the trends of its sales. Following are the result of linear and exponential model trend analysis:
a. Calculate the MSE and MAD for the linear trend model
b. Calculate the MSE and MAD for the exponential trend model
c. Which model that performs better
Chapter 10 Solutions
Elementary Statistics
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