General Studies · Measures of Dispersion
For the arithmetic progression series a, a + d, a + 2d, ..., a + 2nd, the mean deviation from the mean is given by which of the following expressions?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1d × n(n + 1)2n + 1✓
- 2d × √n(n + 1)2n + 1
- 3d × n(n + 2)2n + 1
- 42d × n + 12n + 1
Correct answer
d × n(n + 1)2n + 1
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