Question

The sales of a company (in millions of dollars) for each year are shown in the table below Year 2009 2010 2011 2012 2013 2014 2015 2016 Sales 6 9.5 7.5 14.5 10 14.5 18.5 22.5 a.) Find the least square regression line. b.) Use the least square regression line as a model to estimate the sales of the company in 2018. c.) Determine the coefficient of correlation for the sales data of this company.

Name: the sales of a company in millions of dollars for each year are shown in the table below year 2009 2010 2011 2012 2013 2014 2015 2016 sales 6 95 75 145 10 145 185 225 a find the least square 96546
Uploaded: 2022-05-25T17:14:11-08:00
Duration: 3 min 13 s
Channel: Demi Nelson
Description: the sales of a company in millions of dollars for each year are shown in the table below year 2009 2010 2011 2012 2013 2014 2015 2016 sales 6 95 75 145 10 145 185 225 a find the least square 96546

          The sales of a company (in millions of dollars) for each year
are shown in the table below
Year
2009
2010
2011
2012
2013
2014
2015
2016
Sales
6
9.5
7.5
14.5
10
14.5
18.5
22.5
a.) Find the least square regression line.
b.) Use the least square regression line as a model to estimate
the sales of the company in 2018.
c.) Determine the coefficient of correlation for the sales data
of this company.

Added by David V.

Elementary Statistics a Step by Step Approach

Allan G. Bluman 9th Edition

Instant Answer

Solved by Expert Demi Nelson

05/25/2022

Step 1

We'll assign each year a number, starting with 1 for 2009, 2 for 2010, and so on, up to 8 for 2016. This will be our x-values (independent variable), and the sales figures will be our y-values (dependent variable). | Year (x) | Sales (y) Show more…

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The sales of a company (in millions of dollars) for each year are shown in the table below Year 2009 2010 2011 2012 2013 2014 2015 2016 Sales 6 9.5 7.5 14.5 10 14.5 18.5 22.5 a.) Find the least square regression line. b.) Use the least square regression line as a model to estimate the sales of the company in 2018. c.) Determine the coefficient of correlation for the sales data of this company.