Math Problem Statement

Given the following history, use a three-quarter moving average to forecast the demand for the third quarter of this year. Note, the 1st quarter is Jan, Feb, and Mar; 2nd quarter Apr, May, Jun; 3rd quarter Jul, Aug, Sep; and 4th quarter Oct, Nov, Dec.

JAN	FEB	MAR	APR	MAY	JUN	JUL	AUG	SEP	OCT	NOV	DEC

Last year 125 145 155 195 205 225 170 160 150 225 250 265 This year 145 155 140 215 230 220

Solution

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Math Problem Analysis

Mathematical Concepts

Time Series Analysis
Moving Average
Forecasting

Formulas

Three-quarter Moving Average = (Sum of demands over the previous three quarters) / 3

Theorems

Moving Average Theorem

Suitable Grade Level

Grades 10-12