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Calculate the weighted mean for a distance, which was observed 5 times as 256.82, 256.79, 256.94, 256.81, 256.78 ft. The observations were given a
Calculate the weighted mean for a distance, which was observed 5 times as 256.82, 256.79, 256.94, 256.81, 256.78 ft. The observations were given a weight of 3, 1, 1, 3, and 2, respectively. 256.82 ft 156.82 ft 256.78 ft
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