Dispersion measures (value 37 points) Below are two situations that you must resolve according to what is requested in each one. In each situation you must present all the steps of the process and use the equations. Situation 1: (value 25 points) The following data correspond to days of attendance of two groups participating in a rehabilitation program. Instructions: 1. Identify the variable being studied, 2. Calculate: the variance and standard deviation for each group and then analyze the outcome of both groups. 1. How do you compare the two groups? 2. What does the result of the variance represent? 3. What does the standard deviation result represent? 4. Is group A a heterogeneous group or a homogeneous group? What does it mean? 5. Is group B a heterogeneous group or a homogeneous group? What does it mean? Group A. Group B 13 1 13 13 15 15 17 17 20 20 24 24 Situation 2: (value 12 points) Below are the IQs of individuals interested in entering the Police Academy in Puerto Rico. Instructions: 1. Identify the variable 2. Calculate the variance and standard deviation. 3. Analyze the result 1. What does the result of the variance represent? 2. What does the standard deviation result represent? 3. Is the group a heterogeneous group or a homogeneous group? What does it mean? IQ of individuals interested in entering the Police Academy of Puerto Rico x f 60-69 3 70-79 1 80-89 1 90-99 6 100 - 109 9 110 - 119 4 120 - 129 3 130 - 139 1 140 - 149 1 150 - 159 5 n= 34