The Following Data Are Test Grades for a University Business

question 3

Essay

The following data are test grades for a university business statistics class. $$\begin{array} { | r | r | r | r | r | r | r | r | r | r | } \hline 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \\\hline 62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \\\hline 84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \\\hline 48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47 \\\hline\end{array}$$ a. Construct a cumulative frequency distribution and a cumulative relative frequency distribution for the data.
b. What proportion of the grades is less than 60?
c. What proportion of the grades is more than 70?

Differentiate between relevant and irrelevant costs in investment analysis.

Evaluate projects using the simple rate of return method.

Understand the impact of depreciation, salvage value, and working capital on capital budgeting decisions.

Assess the implications of cash flow timing and the time value of money in investment decisions.

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Definitions:

Approximately Normally Distributed

Refers to a data set or population that closely follows a normal distribution, characterized by a bell-shaped curve.

Z-score

A statistical measure that describes a value's relationship to the mean of a group of values, measured in terms of standard deviations from the mean.

Finite Population Correction

An adjustment made to the standard formula for calculating sample size and variance when the sample size is a significant fraction of the total population.

Non-normal Probability Distribution

Describes a distribution of data that does not follow the normal distribution pattern, showing skewness or kurtosis different from a bell-shaped curve.