Math Problem Statement
Solution
Let's analyze the provided data from the image:
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Department Store A (Histogram): The price distribution is shown in four price ranges:
- 0 to $4.99: About 12 items
- $5 to $9.99: About 6 items
- $10 to $14.99: About 8 items
- $15 to $19.99: About 4 items
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Department Store B (Box Plot):
- The minimum price is around $2.
- The first quartile (Q1) is about $6.
- The median (Q2) is around $12.
- The third quartile (Q3) is about $16.
- The maximum price is about $20.
Evaluating the statements:
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The median price at Department Store A is greater than the median price of Department Store B:
- False: The histogram suggests the median price in Store A falls between $5 and $9.99, which is less than the median price at Store B (about $12).
-
The median price at Department Store B is greater than the median price at Department Store A:
- True: The median at Store B is $12, while at Store A, it is less than $10.
-
A greater percentage of items are under $5 at Department Store B than at Department Store A:
- False: In Store A, about 12 items (out of 30) are priced below $5, which is 40%. From the box plot of Store B, fewer items are likely priced under $5, as the first quartile is around $6.
-
50% of the items in Department Store A are priced between $5 and $14.99, inclusively:
- True: Roughly half of the items in Store A fall between $5 and $14.99 (about 6 items in $5-$9.99 and 8 items in $10-$14.99).
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50% of the items in Department Store B are priced between $6 and $16, inclusively:
- True: Based on the box plot, the interquartile range (Q1 to Q3) is from $6 to $16, meaning 50% of items are within this range.
Correct answers:
- The second, fourth, and fifth statements are correct.
Would you like further clarifications or details?
Here are 5 additional questions you could explore:
- How do you calculate the interquartile range for Store B?
- What does the box plot suggest about the variability of prices in Store B compared to Store A?
- Could you estimate the mean price of items in Store A based on the histogram?
- What would happen to the analysis if the distribution in Store A were more uniform?
- How would outliers in Store B affect the interpretation of its price distribution?
Tip: Box plots are great for visualizing the spread and center of data, but they may not show the frequency of values within each range clearly.
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Math Problem Analysis
Mathematical Concepts
Statistics
Histograms
Box Plots
Median
Interquartile Range
Formulas
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Theorems
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Suitable Grade Level
Grades 6-9
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