Laspeyres Price Index

The Laspeyres Price Index table: Year Food Cloth Meat 1 Quantity 140 420 110 1 Price 1.30 1.40 2.80 2 Price 1.40 1.10 3.00 3 Price 1.80 1.60 4.40 (1) Base year 1, LPI year 2 ? LPI year 3 ? (2) Base year changes to year 2, LPI year 1? LPI year 2 ? LPI year 3 ? 13. The quarterly earnings data: Year.quarter X 1.1 30 1.2 46 1.3 35 1.4 91 2.1 33 2.2 55 2.3 44 2.4 104 (1) 4-point moving averages for 1.2.1/2, ? 1.3/1/2 ? 1.4.1/2, ? 2.1.1/2 ? 2.2.1/2 ? (2) central 4-point MA for 1.3 ? 1.3 ? 2.1 ? 2.2 ? (3) seasonal indexes for 1.3 ? 1.4 ? 2.1 ? 2.2 ? (4) seasonally adjusted earnings for 1.1, 1.2, 1.3, 1.4, 2.1, 2.2, 2.3, 2.4 ? 14. The estimated autoregression model: Sales=314+1.18 Sales(-1)-0.36 Sales(-2) R-sq=0.77 (1) Sales(2013)=140 and Sales(2014)=130, Sales(2015) ? (2) Sales(2016) ?