In study of impact of novel Coronavirus in the world, a frequency graph is plotted for age on the x axis and fatalities on the y axis. Which freque...

Question

In study of impact of novel Coronavirus in the world, a frequency graph is plotted for age on the x axis and fatalities on the y axis. Which frequency curve is most expected as the output?

Accepted Answer

Option a: J shaped curve. Solution: Epidemiological studies of COVID-19 fatalities have consistently shown that the vulnerability to severe complications and death is heavily dependent on age: - In younger age groups (e.g., children, teens, and young adults), the number of fatalities is extremely low. - As age increases, the fatality rate and the absolute number of fatalities increase, first gradually and then exponentially among the elderly (70+ and 80+ age groups), where the risk is at its absolute maximum. When we plot age on the horizontal x-axis and the number of fatalities on the vertical y-axis: - The curve starts very close to the x-axis (minimum frequency) for low ages. - It rises continuously and increasingly steeply as age increases, reaching its maximum at the rightmost extremity (oldest ages). - A curve that starts at a minimum and increases continuously to a maximum at one of the extremities is classified as a J-shaped curve. Hence, Option A is the correct answer.

In study of impact of novel Coronavirus in the world, a frequency graph is plotted for age on the $\displaystyle x$ axis and fatalities on the $\displaystyle y$ axis. Which frequency curve is most expected as the output?

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In study of impact of novel Coronavirus in the world, a frequency graph is plotted for age on the x\displaystyle xx axis and fatalities on the y\displaystyle yy axis. Which frequency curve is most expected as the output?