Identify the shape of each dot plot. Which dot plot has a larger center? What do

Question

Identify the shape of each dot plot.

Which dot plot has a larger center? What does this mean in terms of the otters?

Identify any outliers. What do you think the outliers represent?

Which dot plot has a larger spread?

How do the outliers affect the spread of the dot plot?

4. Researchers weighed a sample of river otters and a sample of sea otters. These dot plots show the results (rounded to the nearest pound). River otters 0 246 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 2 64 66 68 Weight (Ibs) Sea otters 0246 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 52 54 56 58 60 62 64 66 68 Weight (lbs)

Explanation / Answer

For river otters - shape of dot plot is bell shaped while for sea otters is skewed left side or negatively skewed.

river otters has a large center. This explains river otters weights are consistent in a certain range i.e. 10 -26 pound having maximum at 18 pound.

outlier is present in sea otters only and it is 8,10,12 pound. outlier represent the unusual weight about sea otters.

sea otters has large spread as its weight range from 8 to 64 pound.

outlier represent unusual behaviour for complete graph. It makes graph scattered. Here in the given two scenario, we have outlier only for sea otters. River otters has consistent weight in a definite range.

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