Please help! Thank you so much

1. The following data shows the percentage of people in Developing Countries with access to safe drinking water (actual data): Region 1990 2004 Northern Africa 89 91 Sub-Saharan Africa 49 56 Latin America and the Caribbean 83 91 Eastern Asia 71 78 South Asia 72 85 Southeastern Asia 76 82 Western Asia 85 91 Oceania (South Pacific) 51 50 a. Calculate the Mean and Median for 1990 Mean: Median: b. Calculate the Mean, Median, Mode and Range for 2004. Mean: Median: Mode: Range: What conclusions about the trend can you make from this data? (use the Mean, Median, and/or Range to support your answer)