The Scores on a Recent Statistics Test Are Given in the Frequency

question 63

Multiple Choice

The scores on a recent statistics test are given in the frequency distribution below. Construct the corresponding relative frequency distribution. Round relative frequencies to the nearest hundredth of a percent if necessary. $\begin{array}{c|c}\text { Scores } & \text { Frequency } \\\hline 0-60 & 3 \\61-70 & 10 \\71-80 & 11 \\81-90 & 4 \\91-100 & 1\end{array}$

• A) \(\begin{array}{c|c} \text { Scores } & \begin{array}{r} \text { Relative } \\ \text { Frequency } \end{array} \\ \hline 0-60 & 10.34 \% \\ 61-70 & 34.48 \% \\ 71-80 & 37.93 \% \\ 81-90 & 13.79 \% \\ 91-100 & 3.45 \% \end{array}\)
• B) \(\begin{array}{c|c} & \begin{array}{r} \text { Relative } \\ \text { Scores } \end{array} \\ \hline 0-60 & 0.21 \% \\ 61-70 & 0.24 \% \\ 71-80 & 0.55 \% \\ 81-90 & 0.03 \% \\ 91-100 & -0.03 \% \end{array}\)
• D) \(\begin{array}{c|c} & \begin{array}{c} \text { Relative } \\ \text { Scores } \end{array} \\ \hline 0-60 & 12.5 \% \\ 61-70 & 20.1 \% \\ 71-80 & 37.3 \% \\ 81-90 & 15.2 \% \\ 91-100 & 14.9 \% \end{array}\)

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Definitions:

Memory Confidence

The belief in the accuracy or precision of one's own memory.

OCD

Obsessive-Compulsive Disorder, a mental health condition characterized by intrusive thoughts (obsessions) and repetitive behaviors (compulsions).

Persistent Doubting

A cognitive pattern where an individual continuously questions the validity of their thoughts, actions, or decisions, often seen in disorders such as OCD.

Memory Deficits

Memory deficits refer to impairments in the ability to remember information or events, which can be temporary or permanent, and can result from various causes including brain injury, illness, or psychological conditions.