Mr. McElroy enjoys listening to his MP3 player, which has 2,000 songs in five different genres of music. He took a sample of the number of each type of song it played on two different one-hour sessions when it was set to play a random mix. The results are displayed in the table below. What is a good prediction for the number of rock songs Mr. McElroy has on his MP3 player?
By looking at the tables, both equal 20 when adding all values for each table. Now divide 2000 by 20, we would get 100. Take the 6 and multiply it by 100 giving us 600. Then do the same for the 5 and we have 600 and 500. Now we need to average them. Add both and we have 1100 and then divide it by 2 since we added 2 values and we would get 550. Hope this Helps!
i think its
yo need to subtract and divide