The Weekly Salaries (In Dollars)of 24 Randomly Selected Employees of a Company

question 55

Multiple Choice

The weekly salaries (in dollars) of 24 randomly selected employees of a company are shown below,and displayed on the following boxplot. $$\begin{array} { r r r r r r r r } 310 & 320 & 450 & 460 & 470 & 500 & 520 & 540 \\580 & 600 & 650 & 700 & 710 & 840 & 870 & 900 \\1000 & 1200 & 1250 & 1300 & 1400 & 1720 & 2500 & 3700\end{array}$$
Find the IQR and the standard deviation.Which is the most appropriate measure of spread?

• A)IQR: $789.3; standard deviation: $740 The IQR is the most appropriate measure of centre because of the outliers.
• B)IQR: $715; standard deviation: $769 The standard deviation is the most appropriate measure of centre because of the outliers.
• C)IQR: $715; standard deviation: $769 The standard deviation is the most appropriate measure of centre because the outliers are not significant in the distribution.
• D)IQR: $715; standard deviation: $769 The IQR is the most appropriate measure of centre because the outliers are not significant in the distribution.
• E)IQR: $715; standard deviation: $769 The IQR is the most appropriate measure of centre because of the outliers.

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Definitions:

Activation

in psychology, refers to the arousal level of the central nervous system, influencing alertness and responsiveness to stimuli.

Absolute Thresholds

The smallest intensity of a stimulus that must be present for it to be detected at least half the time by a subject.

Candle Flame

The visible, light-emitting part of a candle where the wax vapor burns, often used to symbolize light, warmth, or celebration.

Sensory Organs

Specialized organs of the body that receive stimuli (e.g., eyes, ears, nose, skin, tongue) and allow for the perception of sensory information.