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they pay attention to their health issue or not. The average mark is 4.8 out of 7. The mark indicatesthat males also pay attention to their health issue. Obesity can cause different kinds of diseasesand make people lose confidence. To sum up, most people do not want to be fat.The different perception between males and females makes they have different attitudestowards body figure, and it may be the main factors to determine whether people will buy weightloss products or not.AgeYounger women want to have a slim body figure in order to keep the attractions to the others.However, older women rarely do so and they think that a slim body figure is unhealthy. Therefore,the hypothesis suggests that younger women have a more unrealistic perception of weight issuethan older women do. ANOVA is employed to test whether it is true or not. The results are asfollow:Age VsUnrealisticReasonableOptimisticF-valueSigperceptionPerceptionPerceptionPerceptionAverage age 24.6863 26.6798 27.12501.168 0.260No of people 51 178 16(TABLE 3 – The results of perception VS age)The above results suggest that age does not affect people’s weight perception. But it isaffected by the other factors. The result is out of the prediction.45