Descriptive Statisticsmedium
0:00.0
Two datasets are combined: Dataset A has 20 observations with mean = 40 and variance = 36; Dataset B has 30 observations with mean = 60 and variance = 36. Using the law of total variance, what is the overall variance of all 50 observations combined?
Two datasets are combined: Dataset A has 20 observations with mean = 40 and variance = 36; Dataset B has 30 observations with mean = 60 and variance = 36. Using the law of total variance, what is the overall variance of all 50 observations combined?