The mean profitability of 3 divisions of a company is provided. To find the overall profitability of the company, there is not enough information.
Work Step by Step
If all 3 divisions had the same amount of capital invested, then the mean would be the sun of the 4 divisions' profitability values, divided by 3. But we are not told the amount of capital invested in each division, so we can't calculate the company's overall profitability without this missing information. If the missing data were provided, we would calculate the weighted mean for the data.