THe data set below shows the number of pennies in 8 random samples of 20 coins drawn from an infinitely large jar of coins:

7 18 4 6 3 2 8 5

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I sketched a histogram and I put the frequency of coins on the y axis and then 20 coins on the x-axis. I'm not sure though...I'm confused if you are supposed to list out all 20 coins or something else on the x-axis!! Please clarify asap ~~!!! thank you!!!