Consider the following time series data: Week 1 2 3 4 5 6 Value 18 13 16 11 17 14 Using the naive method(most recent value) as the forecast for next week, compute the Mean Squared Error (MSE).

Acomputer store buys a computer system at a cost of $370.80. the selling price was first at $ 618, but then the store advertised a 20 % markdown on the system. answer parts a and b. a. find the current sale price.