Calculate the range, variance, standard deviation, and coefficient of variatioI of the given distributions on final test scores in Physics. Interpret an compare the results in Section A. Scores fx x -i (x – x)² f(x – x)² 95-99 90-94 85-89 20 80-84 15 75-79 10 70-74 15

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A: here use basic of t- distribution

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A: The provided equation is: h(x)=X-0.009X2 From previous parts, it is known that E(X)=18E(X2)=327.2

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A: This model, known as the three-parameter logistic model. Its solution is obtained as follows:

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Q: c)      Determine the standard deviation σ of x

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Rate of Change

The relation between two quantities which displays how much greater one quantity is than another is called ratio.

Slope

The change in the vertical distances is known as the rise and the change in the horizontal distances is known as the run. So, the rise divided by run is nothing but a slope value. It is calculated with simple algebraic equations as: