Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The mean and standard deviation of the marks of 10 students were found to be 50 and 12 respectively. Later, it was observed that two marks 20 and 25 were wrongly read as 45 and 50 respectively. Then the correct variance is
Text Solution
Verified by ExpertsThe correct answer is:
269
(269) 
Correct variance 
──────────────────────────────────────────────────────────────────────────────────────────
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems
PART-I PHYSICS
SECTION-A
Given below are two statements: one is labelled as Assertion and the othe…
The output from a NAND gate having inputs and given below will be.
In the network shown below, the charge accumulated in the capacitor in steady state will be :
Opti…
Given below are two statements:
Statement I: For a planet, if the ratio of mass of the planet to it…
A particle executes SHM of amplitude A. The distance from the mean position when its's kinetic ener…
A passenger sitting in a train A moving at observes another train B moving in the opposite directi…