Quite a few people failed to READ THE QUESTION (rookie mistake) and forgot to actually construct the histogram.
This question had a bit of a puzzle in it. What are the boundaries of the groups? Most people decided to use the end of the group. You should think about how the numbers would have been rounded.
I guessed the groups should be extended by 0.5 of a km each way. Why do you think that is?
Otherwise nearly everyone calculated the group widths as 2. This would mean they are not connected and so it wouldn't be a histogram (which many of you wouldn't know as you didn't complete the histogram)
Another important thing to note is that this is not like a bar chart because the x axis is a scale rather than set of categories. Numbers should be evenly spaced and the groups set based on the scale not the axis set based on the groups.
For this question the main problem was forgetting about frequency density and plotting these with frequency instead (and writing 3 in the table for 1000 < w < 1400 instead of 6)
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