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The following code:

repeat[m_, n_Integer?Positive] := Sequence @@ ConstantArray[m, n]
data = {repeat[71, 2], repeat[73, 3], repeat[74, 5], 76, repeat[77, 3], 78, 80}
Histogram[data, {2}, "Probability"]

Produces the following histogram:

Histogram

Since the least data point is 71 and the bin width is 2, the first bin, unsurprisingly, starts at 70. Keeping the bin width at 2, how can I force it to start at 70.5?

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    $\begingroup$ If you look at the Details section of the Histogram documentation, you'll find that you can give a bin specification as {xmin, xmax, dx}, so in your case perhaps Histogram[data, {70.5, 82, 2}, "Probability"]? $\endgroup$
    – MarcoB
    Commented Apr 18, 2021 at 19:35
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    $\begingroup$ @MarcoB Thank you, Histogram[data, {70.5, 80.5, 2}, "Probability"] did the trick. For reference, I used 80.5 because the largest value in the dataset (80) is in the [78.5, 80.5] bin. Do you want to post that as an answer for me to accept? $\endgroup$
    – Lucca
    Commented Apr 18, 2021 at 20:24
  • $\begingroup$ Lucca, I'm glad it helped. I'd recommend that you post a self-answer with that information and the extra modification you made to suit your dataset. Self-answers are encouraged here! $\endgroup$
    – MarcoB
    Commented Apr 18, 2021 at 21:25

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Histogram[data, {70.5, 80.5, 2}, "Probability"] did the trick. I used 80.5 because the largest value in the dataset (80) is in the [78.5, 80.5] bin.

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