![]() Graphs exist in order to communicate, not confuse.Ī histogram always has “bins” which cover a range of values. This is too many assumptions for any graph. That is two too many assumptions for students in an exam. I make this assumption because I know that is what Excel does. To get this answer I assume that the lambs are weighed to a precision of one decimal place, and the numbers under the graph are the inclusive upper bounds for the area above. I suspect the desired answer is one out of 32. The labelling of the horizontal axis renders this question unanswerable. The first question asks: “What proportion of the lambs weighs less than 1.25 kg?” ![]() The results are shown on the histogram above.” She records the weights of 32 lambs born on her farm. The introduction says: “Ali has a farm in Southland.
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