The Following Data Are Test Grades for a University Business

question 6

Essay

The following data are test grades for a university business statistics class. $$\begin{array} { | l | l | l | r | r | r | r | r | r | r | } \hline 63 & 74 & 42 & 65 & 51 & 54 & 36 & 56 & 68 & 57 \\\hline 62 & 64 & 76 & 67 & 79 & 61 & 81 & 77 & 59 & 38 \\\hline 84 & 68 & 71 & 94 & 71 & 86 & 69 & 75 & 91 & 55 \\\hline 48 & 82 & 83 & 54 & 79 & 62 & 68 & 58 & 41 & 47 \\\hline\end{array}$$ 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?

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Definitions:

Oppositional Defiant Disorder (ODD)

A behavioral disorder in children and adolescents characterized by a persistent pattern of angry or irritable mood, argumentative/defiant behavior, and vindictiveness.

Conduct Disorder (CD)

A psychological condition identified during childhood or adolescence, marked by a continuous trend of aggressive and destructive actions.

Autism Spectrum Disorder

A variety of conditions related to brain development that lead to difficulties in communication, social skills, and repeated patterns of behavior.

Repeats Words

The repetition of words or phrases, a behavior that can indicate various cognitive, linguistic, or developmental disorders.