Three Statistics Classes (50 Students Each)took the Same Test

question 36

Multiple Choice

Three statistics classes (50 students each) took the same test.Shown below are histograms of the scores for the classes.Use the histograms to answer the question.
-Which class had the smallest standard deviation?

• A)Class 3,because the shape is symmetric and unimodal.
• B)Class 3,because the shape has the highest number of students.
• C)Class 1,because the shape is fairly symmetric and uniform.
• D)Class 2,because the shape is skewed.
• E)None,because the classes had the same standard deviation.

---

Definitions:

Fixed-Weight Indexes

Economic measures where the quantities of the components are kept constant over time, allowing for the comparison of different periods based solely on price changes.

Equivalent Annual Annuity

The Equivalent Annual Annuity is a financial concept used to evaluate the annual return on an investment that has a different payment schedule, by converting it into an annuity with the same total present value.

Mutually Exclusive Projects

Investment projects where the acceptance of one project prevents the acceptance of another.

Capital Budgeting

The process by which investors or management assess potential large expenditures or investments to determine their profitability.