Please provide a detailed solution to q 1. Please write the solution on a paper and send photo. Please provide a detailed solution to q 1. Please write the solution on a paper and send photo. 'n iS observations on x. the lollowing results were • 2830 170 On observation that was 20 was found to be wrong and was by the correct value 30. then the corrected variance Is 78.00 c 17783 Share with your friends Share 1 Rashi Lokwani answered this Dear Student, Given N= 15, ∑x2 = 2830 and ∑x = 170Since, one observation 20 was replaces by 30,then,∑x2 = 2830 -(20)2 + (30)2 = 2830 - 400 + 900 = 3330∑x =170 - 20 + 30 = 180Variance, σ2 = ∑x2N - (∑xN)2=333015 - 180152 =333015 - 180 × 18015 × 15 = 333015 -216015 = 117015 = 78.00Answer: Option A Regards 1 View Full Answer
