Test Scores
the Scores on a Calculus Test for a Random

question 62

Essay

Test scores
The scores on a calculus test for a random sample of 40 students are as follows:
$$\begin{array} { l l l l l l l l l l } 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \\62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \\84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \\48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47\end{array}$$
-Consider the following cumulative frequency distribution.
$$\begin{array} { | c | c | c | } \hline \text { Classes Limits } & \text { Cumulative Frequency } & \text { Frequency } \\\hline < 5 & 11 & \\< 10 & 18 & \\< 15 & 24 & \\< 20 & 33 & \\< 25 & 45 & \\\hline\end{array}$$ Fill in the frequencies for each class in the above table.

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Definitions:

Investment Account

An account held at a financial institution that is used for the purpose of investing in securities such as stocks, bonds, mutual funds, and other investment vehicles.

Unrealised Profit

Profit that has been recorded on paper due to accounting entries but has not yet been realized through actual cash transactions.

Inventory Write-down

A reduction in the book value of inventory that reflects a decrease in the market value of the items or their usability.