Free EA Practice Question

Question 1 of 1
ID: EA-DS-4
Section: Quantitative Reasoning - Data Sufficiency
Topics: Statistics; Standard Deviation
Difficulty level: Challenging

Practice Mode: Single selected Question » Back to Overview

What is the standard deviation of 1, 2, 3, $k$, 5, 6 and 7?

  1. Standard deviation of 2, 3, 4, $(k+1)$, 6, 7 and 8 is 2.
  2. Standard deviation of 0, 1, 2, $(k-1)$, 4, 5, and 6 is 2.
» Quit
» Quit