Learning Goal from Lesson 9.1 and Lesson 9.4 I can calculate, analyze, and compare the measures of center (mean and median) and measure of spread (standard deviation) for data sets. (Lesson 9.1) (1/2 point) 1. How I Did I got it! I'm still learning it. The number of songs known and liked from the band Journey by a sample of six L4L teachers is below. 6,5,4,5,6,4 What is the mean of this sample? (Lesson 9.1) (1/2 point) 2. The number of songs known and liked from the band The Police by a sample of six L4L teachers is also below. 3,8, 5, 1, 9, 4 What is the mean of this sample? (Lesson 9.1) (1/2 point) 3. Without doing any calculations, which data set (Journey or The Police) has the higher standard deviation? How do you know?