A student scored 89 on Calculus-1 exam where the class mean is 85 and a SD of 4. He scored 84 on a C programming exam with a mean of 80 and a SD of 4. In which class his relative position is higher. O a. C Programming O b. None of the option is correct c. Same relative position in both the courses O d. Calculus 1

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A: We know that measures of variability or dispersion are, 1. Variance 2. Mean deviation  3. Range

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A: Given:   Sweden Norway Denmark 10 11 7 9 10 5 4 5 2 2 2 0

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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.