6 Safari File Edit View History Bookmarks Window Help :3 as a1%-- Sat6=58PM Q webassignmet 7* Favorites 11. [mu/1 Points] PREVIOUS ANSWERS PECKSTATZCOREQ 33.0655. Zimbra 3 Amazon Consider the following data on tipping percent for 20 restaurant tables. 111 RCC 4.0 9.0 49.0 36.8 17.9 14.4 59.2 54.0 14.0 18.6 I see 0 Google 42.4 27.0 31.9 31.9 109.0 23.0 14.0 36.1 15.1 19.0 mean standard deviation 14.2 (b) Delete the observation mean standard deviation m USE 8.3114 x% x% % % How do these values compare to the values from part (a)? (a) Calculate the mean and standard devlatlon for thls data set (In percent). (Round the standard devlatlon to four declmal places.) of 109.0 and recalculate the mean and standard deviation (in percent). (Round your answers to four decimal places.) When the observation of 109.0 was excluded from the data set, the mean and standard deviation both decreased 3 V What does this suggest about using the mean and standard deviation as measures of center and variability for a data set with outliers? Thls suggests that using the mean and standard devlatlon as measures of center and varlablllty for data sets wlth outllers present l can be risky a V , because outliers seem to l have a q a signicant impact on those measures. PRACTICE ANOTHER