Suppose we want to compare the length of hospital stay for patients with the same diagnosis at two different hospitals. The results are shown in images. a) Why might a t test not be very useful in this case? b) Carry out a nonparametric procedure for testing the hypothesis that lengths of stay are comparable in the two hospitals.

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Q: The P-value for this hypothesis was found to be:

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Ratios

A ratio is a comparison between two numbers of the same kind. It represents how many times one number contains another. It also represents how small or large one number is compared to the other.

Trigonometric Ratios

Trigonometric ratios give values of trigonometric functions. It always deals with triangles that have one angle measuring 90 degrees. These triangles are right-angled. We take the ratio of sides of these triangles.