A Normal Probability Plot Is Given Below for the Weekly

question 139

Essay

A normal probability plot is given below for the weekly incomes (in dollars)of a sample of engineers in one town. Use the plot to assess the normality of the incomes of engineers in this town. Explain your reasoning.

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Definitions:

Annual Profit

The net earnings of a company over a one-year period, calculated as revenue minus expenses, taxes, and costs.

Margin of Safety

The difference between actual or expected sales and sales at the break-even point, indicating the risk margin for not reaching profit.

Dollars

The unit of currency used in the United States and other countries, represented by the symbol $.

Degree of Operating Leverage

The Degree of Operating Leverage is a measure that assesses the sensitivity of a company's operating income to changes in its sales volume, indicating the percentage change in operating income for a percentage change in sales.