Chapter 4 - Descriptive Statistics Chapter 4 CASE : PLE : Elizabeth Burke has received several questions from other PLE managers regarding quality, customer satisfaction, and operational performance. She would like you to summarize some data from the Performance Lawn Equipment Database using statistical tools and analysis: 1. Frequency distributions and histograms for the data in the Customer Survey worksheet 2. Descriptive statistical measures for engine production time in the worksheet Engines 3. A frequency distribution and histogram for the blade weight samples in the worksheet Blade Weight 4. The proportion of samples that failed the functional performance test in the worksheet Mower Test 5. PivotTables that summarize the data and provide useful insights in the worksheet Employee Retention 6. Correlations among the satisfaction survey variables in the worksheet Purchasing Survey Write a report that clearly shows these results and explain the key insights