Answer
The mean is 82.7, mode:473 and 10 million, the median is 80, the midrange is 83.
Work Step by Step
The mean can be counted by summing all the data and dividing it by the number of data: $\frac{78+81+95+73+69+79+92+73+90+97}{10}=82.7$, the mean is 82.7. The mode is the data occuring the most times and here the mode is 73, which appears twice. The median is the average of the 1 or 2 (here 2) middle data: (81+79)/2=80, the median is 80. The midrange is the average of the highest and the lowest data: (69+97)/2=83, the midrange is 83. We do not know which death rate belongs to which year.