The variance and standard deviation

A. Use the following population data to complete the next two questions: 50, 62.5, 37.5, 75.0, 45.0, 47.5, 15.0, 25.0 What is the mean? What are the variance and standard deviation? B. Use the following data to complete the next three questions: Data A 10,421; 10,110; 9,862; 10,475; 9,920; 10,592; 11,213; 10,933; 11,134; 10,316 Data B 1,379; 1,356; 1,373; 1,410; 1,389; 1,463; 1,529; 1,499; 1,516; 1,355 What is the sample covariance between Data A and Data B What is the sample correlation coefficient between Data A and Data B How would you classify the linear relationship between Data A and Data B? a. Weak b. Moderate c. Strong d. No relationship C. Use the following data to complete the next five questions. A sample of 10 cell phone/cable/Internet bills: $1,589; $593; $1,223; $869; $423; $1,720; $708; $1,425; $922 and $308. What is the mean and median of the cost? What is the five-number summary of the cost?