Answer
To start, arrange the weights in ascending order: 53kg, 55kg, 61kg, 61kg, 76kg, 91kg, 98kg, 105kg, 120kg. For the mean, sum all the weights, then divide by the count of the weights (which is 9): 720/9 = 80. To find the median, identify the middle value, which is 76kg. The mode is the weight that occurs most frequently, which is 61kg. Thus, the calculations yield: Mean: 80, Median: 76, Mode: 61.
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