Each of three friends flips a coin 79 times. The results for each friend are shown in the tables. Find the relative frequency for the event ​"heads​" for each friend. If the friends combine their results to get 111 heads and 126 ​tails, what is the relative frequency for the event ​"heads​"? Use pencil and paper. Suppose each friend flips a coin 790 times. Is there a value you would expect the relative frequency for the event ​"heads​" to be close​ to?