Test Scores
the Scores on a Calculus Test for a Random

question 146

Essay

Test scores
The scores on a calculus test for a random sample of 40 students are as follows:
$$\begin{array} { l l l l l l l l l l } 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \\62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \\84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \\48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47\end{array}$$
-{Test Grades Narrative} Construct a cumulative frequency and a cumulative relative frequency distribution for this data.What proportion of the exam scores are less than 60? What proportion of the exam scores are 70 or more?

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Definitions:

Cost Model

An accounting method that values an asset based on the amount spent to acquire it minus any depreciation.

Dividend Income

Income earned from owning shares in a company, paid out from the company's earnings to shareholders.

Common Shares

Equity securities that represent ownership in a company, entitling shareholders to vote and typically to receive dividends.

Other Income

Revenue from non-core business activities, including interest, dividends, or any other non-operational income sources.