1. The monthly sales for Telco Batteries, Inc., were as follows: Month Sales
Jan 20
Feb 21
Mar 15
Apr 14
May 13
Jun 16
Jul 17
Aug 18
Sep 20
Oct 20
Nov 21
Dec 23
a. Plot the monthly sales data on a sheet of graph paper.
b. Forecast January sales for the New Year using each of the following