Which of the Following Statements Are Not True About the Sample

question 91

Multiple Choice

Which of the following statements are not true about the sample correlation coefficient r?

• A) The value of r depends on which of the two variables under study is labeled x and which is labeled y.
• B) The value of r is independent of the units in which x and y are measure.
• C) The value of r is always between -1 and +1, inclusive.
• D) The value of r = 1 if all \(\left( x _ { i } , y _ { i } \right)\)
• Pairs lie on a straight line with positive slope.
• E) The value of r = -1 if all \(\left( x _ { i } , y _ { i } \right)\)
• Pairs lie on a straight line with negative slope.

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Definitions:

Total Cost

The complete cost of production that includes both fixed and variable costs.

Profit

The financial gain obtained when the amount of revenue gained from a business activity exceeds the expenses, costs, and taxes associated with the activity.

Average Total Cost

Average Total Cost is an economic concept that represents the total cost of production divided by the quantity of output produced, encompassing both fixed and variable costs.

Output

The total amount of goods or services produced by a firm, industry, or economy in a given period.