Here Are Summary Statistics for the Time,in Minutes,it Took 21

question 12

Multiple Choice

Here are summary statistics for the time,in minutes,it took 21 students to write a statistics test. $\begin{array} { c | c | c | c | c | c | c | c } \text { Count } & \text { Mean } & \text { Median } & \text { StdDev } & \text { Min } & \text { Max } & \text { Q1 } & \text { Q3 } \\\hline 21 & 23.9 & 22.0 & 12.2 & 5.1 & 51.7 & 15.4 & 33.4\end{array}$ Would you describe this distribution as symmetric or skewed?

• A)Skewed to the right,because the mean is much larger than the median and the upper quartile is farther from the median than the lower quartile.
• B)Symmetric,because the mean and the median are close.
• C)Skewed to the right,because the mean is much larger than the median and the lower quartile is farther from the median than the upper quartile.
• D)Skewed to the left,because the mean is much larger than the median and the lower quartile is farther from the median than the upper quartile.
• E)Skewed to the left,because the mean is much larger than the median and the upper quartile is farther from the median than the lower quartile.

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Definitions:

Placebo

A substance or treatment with no therapeutic effect, often used in clinical trials as a control to test the efficacy of treatments.

Treatment Outcomes

The results or effectiveness of a therapeutic intervention or medical treatment.

Preferred Treatment

A treatment method considered optimal based on evidence and clinical consensus for a specific condition or population.

Medium Positive Effect

A statistical term indicating a moderate level of positive change or impact observed in data, often in the context of experimental and psychological research.