To get the mean you add the numbers and divide by how many numbers there are and then you would get: 784 divided by 10 which would be 78.4 for the mean
mean: add everybody and divide by how many numbers tehre are first count 10 numbers add them (79+79+91+91+91+91+98+98+118+130)=966 divide that by 10 966/10=96.6 mean=96.6
median is the number that is in the middle when you arange them in order from lowest to highest count to 5th number or 6th and aveage them 91 is median
mode is the number tha appears most often 91 appears 4 times