A scientist is weighing each of 30 fishes. Their mean weight worked out is 30 g and a standard deviation of 2 g.
A scientist is weighing each of 30 fishes. Their mean weight worked out is 30 g and a standard deviation of 2 g. Later, it was found that the measuring scale was misaligned and always under reported every fish weight by 2 g. The correct mean and standard deviation (in gram) of fishes are respectively
(a) 28, 4
(b) 32, 2
(c) 32, 4
(d) 28, 2
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Correct mean = Old mean + 2 = 30+2 = 32
As standard deviation is independent of change of origin
It remains same.
standard deviation = 2.
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