Statistics - Histograms


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A histogram is a graphical representation of the distribution of numerical data. It is an estimate of the probability distribution of a continuous variable (quantitative variable).

Problem Statement:

Every month one measure the amount of weight one's dog has picked up and get these outcomes:

0.50.50.3-0.21.600.10.10.60.4

Draw the histogram demonstrating how much is that dog developing.

Solution:

monthly development vary from -0.2 (the fox lost weight that month) to 1.6. Putting them in order from lowest to highest weight gain.

-0.200.10.10.30.40.50.50.61.6

We decide to put the results into groups of 0.5:

  • The -0.5 to just below 0 range.

  • The 0 to just below 0.5 range, etc.

And here is the result:

Histogram

There are no values from 1 to just below 1.5, but we still show the space.

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