Activity 2: Grouped Data Analyze the direction for each number and do what is asked. 1. Solve for the range of the given scores in the Second Summative Assessment of Grade 7 - St Bernadette 45 -10 41 -4 2. The data below were taken from 50-item test of 45 Grade 7 Mathematics students, Using the frequency distribution table below, compute the mean. Class Interval Frequency Of 20 -24 15 -29 30-34 35 -39 40 -44 45-45 3. Below are the scores of 30 students in a Mathematics summative assessment. Find the variance and the standard deviation. Clam Interval Frequency of 55-57 52-54 49 -51 46 -48 43 - 43 40 - 42 37 -39 Faith Formation: JUSTICE One of the measures of variability is the range. In order to find the range, we have to identify the highest value and the lowest value of the given set of data. But in real-life, we do not have to determine who is superior or inferior to us because in God's eye, we are all the same, we are all equal, "For God shows no partiality, Romans 2:11 Enrichment: In our examples, there are ungrouped and grouped data. Is it always necessary to group a set of data when finding its range, mean deviation, variance, and standard deviation? Why or why not?Focus Question: Let us now try to check if you have really absorbed the core concepts and ideas of our lessen for this week. Try to mentally answer the following guide questions, which will help you senses your learning progress. If you can already answer these questions, it means that you succeeded in your learning journey. If not. try reading again the module's lecture or try watching again our video-graphed discussion so that you may soon be able to answer these questions on your own. 1. What is measures of variability? 2. What is range, mean deviation, variance, and standard deviation? 3. How do we find the range for uns over uped and grouped data? 4. How do we find the mean deviation for ungrouped arid grouped data? 5. How do we find the variance for ungrouped and grouped data? 6. How do we find the standard deviation for ungrouped and grouped data? Activity 1: Ungrouped Data Analyze the direction for each number and do what is asked. 1. The following data were taken from the survey on age profile of non-teaching personnel of Sun Agustin Diocesan Academy, Inc.: 23, 24, 24, 25, 27, 31, 34, 38, 40, and 41. What is the range of their ages? Explain your answer. 2. The following data were gathered from the monthly consumption of household electricity of 10 families, Compute the mean deviation on the number of KwH used: 121, 130, 140, 112, 78, 57, 88, 70, 65, and 50. Explain your answer. 3. The data were taken from the survey of the ages of 10 students. 15, 16, 17, 17, 18, 18, 18, 19, 20, and 21. Find the variance and the standard deviation of their ages, then briefly explain your