A stack of 8 ham sandwiches weighs 1,092 grams. On average, each sandwich weighs 12 grams, and the same amount of ham is used for each sandwich. A loaf of bread has approximately 450–460 grams of bread. How many loafs would you need to make another stack of 8 ham sandwiches?

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The major difference is that a histogram is only used to plot the frequency of score occurrences in a continuous data set that has been divided into classes, called bins.  bar charts, on the other hand, can be used for a great deal of other types ofvariables  including  ordinal  andnominal  data sets.