The actual demand for a product and the forecast for the product are shown below. Calculate MAD and MSE. Show all of your computations. 
Definitions:
First Words
The initial set of meaningful words typically produced by infants as they begin to acquire language, usually occurring between 10 to 15 months of age.
Manual Babbling
The spontaneous, repetitive movement of the hands and fingers by infants, akin to the vocal babbling stage but in a manual or gestural form.
Maturation Processes
The natural developmental stages that an organism undergoes as it grows and ages, encompassing physical, psychological, and emotional development.
Vocal Babbling
The production of repetitive syllables and sounds by infants, which precedes the development of language skills.
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