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The below chart displays the heights of $50$randomly selected Canadian students who participated in CensusAtSchool in $2007-2008$.

The sample is very large and the variables are quantitative. Therefore, it will be better to make a histogram of the given data.

The width of the bars is to be equal, while the height is to be equal to the frequency.

Shape: At $170$, the dot-plot reaches its pinnacle. It shows that the four students are $170cm$tall. As a result, the Mode is $170cm$. The majority of the students are between the heights of $160cm$ and $180cm$. The distribution is nearly symmetric and not skewed in any way.

Centre:The centre divides the observations into two equal sections, i.e. the median, such that about half of the observations take greater values and the other half take smaller values. The median in this data is around $170cm$($169.88cm$).

Spread: The spread of the distribution indicates the degree of variability in the data. Giving the greatest and smallest values is one technique to describe the dispersion. The range of the given data is $191-145.5=45.5\mathrm{cm}$,$145.5cm$ being the lowest and 191 being the highest. Instead, we can calculate range by subtracting the least and greatest values.

Outliners: There are no outliers in the data, while there are several values, such as $143$ and $150$, that deviate from the overall pattern. They don't, however, stand out from the rest of the distribution.