Data Analytics | Our Portfolio

1. Basic Statistics (5%) (a) Exam Grades Analysis for Module A The exam grades for 20 students in Module A are: 5, 31, 19, 21, 33, 8, 15, 43, 67, 50, 93, 28, 41, 41, 35, 10, 23, 77, 97, 63 (i) Mean: module_a <- c(5, 31, 19, 21, 33, 8, 15, 43, 67, 50, 93, 28, 41, 41, 35, 10, 23, 77, 97, 63) mean(module_a) The mean score for Module A is 40. (ii) Median: median(module_a) The median score for Module A is 34. (iii) Mode: table_result <- table(module_a) modes <- as.numeric(names(table_result[table_result == max(table_result)])) modes The mode score for Module A is 41. Measures of Spread (i) Variance: var(module_a) The variance of Module A scores is 734.7368. (ii) Standard Deviation: sd(module_a) The standard deviation of Module A scores is 27.10603. (b) Exam Grades Analysis for Module B The exam grades for 20 students in Module B are: 17, 40, 34, 19, 53, 87, 71, 42, 86, 61, 10, 22, 92, 52, 27, 12, 43, 84, 32, 41 Combining Module A and B Scores The combined…