Two forecasting models were used to predict the future values of a time series.The forecasts are shown below with the actual values. 
Calculate the mean absolute deviation (MAD)for Model 2.
Definitions:
Basal Body Temperature Method
A method of tracking a woman's fertility by monitoring temperature changes throughout her menstrual cycle.
Fertility Awareness-Based Methods
A set of practices used to determine the fertile and infertile phases of a person's menstrual cycle to prevent or achieve pregnancy.
Ovulation
The phase in the menstrual cycle when an ovary releases an egg for possible fertilization, marking a woman's most fertile period.
Diaphragm
A dome-shaped, flexible barrier device inserted into the vagina to prevent pregnancy by covering the cervix.
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