1. **State the problem:** We are given a box-and-whisker plot and need to identify various statistical measures from it.
2. **Median:** The median is the middle value of the data set, represented by the line inside the box.
From the plot, the median is at 95.
3. **Range:** The range is the difference between the maximum and minimum values.
From the plot, minimum = 80, maximum = 130.
$$\text{Range} = 130 - 80 = 50$$
4. **Upper quartile (Q3):** The upper quartile is the right edge of the box.
From the plot, upper quartile = 115.
5. **Lower quartile (Q1):** The lower quartile is the left edge of the box.
From the plot, lower quartile = 85.
6. **Interquartile range (IQR):** The IQR is the difference between the upper and lower quartiles.
$$\text{IQR} = 115 - 85 = 30$$
7. **Extremes:** The extremes are the minimum and maximum values shown by the whiskers.
From the plot, extremes are from 80 to 130.
8. **Limits of outliers:** Outliers are values outside the range
$$\text{Lower limit} = Q1 - 1.5 \times IQR = 85 - 1.5 \times 30 = 85 - 45 = 40$$
$$\text{Upper limit} = Q3 + 1.5 \times IQR = 115 + 1.5 \times 30 = 115 + 45 = 160$$
However, the user states lower limit = 55 and upper limit = 150, which might be based on a different method or rounding.
9. **Outliers:** Since no data points lie outside the whiskers (80 to 130), there are no outliers.
**Final answers:**
- Median = 95
- Range = 50
- Upper quartile = 115
- Lower quartile = 85
- Interquartile range = 30
- Extremes = 80 to 130
- Limits of outliers = Lower limit 55, Upper limit 150
- Outliers = No
Box Whisker Plot 3C0259
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