Exam-Style Problem
⬅ Back to Subchapter
Browsing as Guest. Progress, bookmarks and attempts are disabled.
Log in to track your work.
June 2002 p6 q4
2538
In a spot check of the speeds \(x \text{ km h}^{-1}\) of 30 cars on a motorway, the data were summarised by \(\Sigma(x - 110) = -47.2\) and \(\Sigma(x - 110)^2 = 5460\). Calculate the mean and standard deviation of these speeds.
Log in to record attempts.