Sales of a new CD at a store for the last 4 weeks are shown below. 
a.Find a 3 period moving average forecast for the next week.
b.Find a 4 period moving average forecast for the next week.
c.Actual sales for week 5 were 105 units. What would be the 3- and 4-period moving average forecasts for week 6?
Definitions:
SS(Total)
The total sum of squares in a statistical analysis, representing the total variation in the dataset.
ANOVA Table
A tabulated format that displays the output from an analysis of variance, summarizing the sources of variation and the associated statistical tests.
α
Represents the level of significance in hypothesis testing, often denoting the probability of making a type I error.
SSB
A statistical term that can stand for Sum of Squares Between groups, measuring the variability among group means in an analysis of variance.
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