NARRBEGIN: Test Scores
Test Scores
the Scores on a Calculus

question 122

Essay

NARRBEGIN: Test scores
Test scores
The scores on a calculus test for a random sample of 40 students are as follows:
$$\begin{array} { l l l l l l l l l l } 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \\62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \\84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \\48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47\end{array}$$ NARREND
-Forty truck buyers were asked to indicate the car dealer they believed offered the best overall service. The four choices were A, B, C, and D as shown below:
$\begin{array} { l } A&C&C&C&D&C&B&A&C&D&A&B&C\\A&B&C&B&A&C&B&B&C&B&B&A&C\\\text { A } & \text { C } & \text { C } & \text { A } & \text { D } & \text { B } & \text { B } & \text { C } & \text { C } & \text { A } & \text { C } & \text { D }&B\\A&D&C&D&A&B&B&C&D&A&B&D&A\\\end{array}$
Construct a table showing the frequencies and relative frequencies for this data set. What proportion of car buyers rated dealer D as the best?

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Definitions:

Return-On-Investment

A performance measure used to evaluate the efficiency or profitability of an investment, calculated by dividing the profit of an investment by its cost.

Trade-Off

A situation that involves losing one quality or aspect of something in return for gaining another quality or aspect.

Major Categories

Principal divisions or classifications in a system or grouping, under which more specific items or concepts can be filed.

Objections

In sales and negotiation, objections are the concerns, hesitations, or doubts expressed by a potential buyer or client.