If mean, median, and mode of a moderately skewed observations are (x - 1), (2x - 4) and '2x', respectively, then find the value of 'x'.
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Correct answer: B
Explanation
Mode = 3 × Median − 2 × Mean
Mean = (x − 1)
Median = (2x − 4)
mode = 2x
2x = 3(2x − 4) − 2(x − 1)
2x = 6x − 12 − 2x + 2
2x = 4x − 10
10 = 2x
x = 5