Let L. N" --;. H" be a linear operator. (a) Prove that if L is an isometry. then IIL(x) 11 forxin H". = Ilx li. (b) Prove that if L is an isometry and () is the angle betWeen vectors x and y in H". then the angle between L(x) and L(y) is also () .

Week 3: 9/59/11 Statistics Chapter 2: Summarizing Data in Tables and Graphs Section 2: Organize Discrete and Continuous Data Shapes of distribution ● When describing a distribution one must pay attention to its shape, center, and spread Uniform Distribution: Bellshaped Distribution ● These two shapes are considered to be symmetrical Week 3: 9/59/11 Skewed Right Distribution