Let 9 = x₁ < x₂ < … < x₇ be in an A.P. with common difference d.… | JEE Main 2023 Mathematics PYQ

MCQMediumJEE Main 2023 · 1 February, Shift 2Measures of Dispersion

Let $9 = x_1 < x_2 < \dots < x_7$ be in an A.P. with common difference $d$ . If the standard deviation of $x_1, x_2, \dots, x_7$ is $4$ and the mean is $\overline{x}$ , then $\overline{x} + x_6$ is equal to:

A
$18 \left( 1 + \frac{1}{\sqrt{3}} \right)$
B
$34$
C
$2 \left( 9 + \frac{8}{\sqrt{7}} \right)$
D
$25$

Answer & step-by-step solution

Practice more Measures of Dispersion questions

Get unlimited AI-adaptive practice, mastery tracking, and an AI tutor that explains every step - free to start.

Start free trial More on Measures of Dispersion

Answer & step-by-step solution

Practice more Measures of Dispersion questions

Related questions