Sales Are Tracked During the Past Year in the Graph

question 29

Multiple Choice

Sales are tracked during the past year in the graph below. Management is pleased to show the growth in sales at the end of the year.Why would this be an incorrect conclusion?

• A)The highest growth was in the month of June
• B)Cannot compare sales for different time periods
• C)The graph is not showing growth rates
• D)A bar graph would be more effective in determining that conclusion
• E)A second year of data would be needed to make that conclusion

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Definitions:

Standard Deviation

This metric calculates the dispersion of a dataset relative to its mean, demonstrating how spread out the numbers are.

Histogram

A graphical representation of data that groups numbers into ranges, showing the frequency of data within each range via bars.

Trimmed Mean

A method of averaging that removes a specified percentage of the largest and smallest values before calculating the mean, often used to reduce the effect of outliers.

Bootstrap Standard Error

A measure of the variability or dispersion of a statistic's sampling distribution, estimated using the bootstrap resampling method.