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Would be most grateful if there are some pointers given on this question.

Ques: There is a range of different brands of museli bars with information of nutritional values. E.g Museli bars A with variables of Vitamin, Fat, Potassium values and so on. I have been asked to plot a histograms according to the variables. Since the variables have different scales, I normalised them by using Z-score. I got a few histograms with outliners, 1 or 2 with gaps between the columns in the graphs, and a few jumbled up charts. I have tried to reclassify the gaps columns charts to no avail.

Next, how do I read the graphs for largest variability based on these plotted histograms?

My understanding is that a data point above Z-score 0 means refers better than above average, and having outliners in the charts would probably mean that the standard deviation is great? Beside these guidelines, how do I interpret the graphs correctly for variablility?

Many thanks

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# How to read Z-score histogram for variability?

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