Question:
A student reported the following arsenic concentrations in water samples:
Arsenic concentration (mg/L) 0.10 0.12 0.20 0.05 0.40 0.30 0.35
Which one of the following is a correct statement about arsenic concentration distribution?
A student reported the following arsenic concentrations in water samples:
| Arsenic concentration (mg/L) | 0.10 | 0.12 | 0.20 | 0.05 | 0.40 | 0.30 | 0.35 |
|---|
Which one of the following is a correct statement about arsenic concentration distribution?
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Right-skewed data have a long tail on the high-value side, and the mean is greater than the median.
Updated On: Dec 17, 2025
- Arsenic concentration distribution is symmetric
- Arsenic concentration distribution is positively skewed
- Arsenic concentration distribution is negatively skewed
- Arsenic concentration is following Weibull distribution
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The Correct Option is B
Solution and Explanation
The data values include:
0.05, 0.10, 0.12, 0.20, 0.30, 0.35, 0.40.
The distribution has a long tail towards the right due to the larger values (0.30, 0.35, 0.40), while most values are clustered on the lower side. This is a classical indication of a positively skewed (right-skewed) distribution.
Hence, option (B) is correct. Final Answer: Positively skewed distribution
0.05, 0.10, 0.12, 0.20, 0.30, 0.35, 0.40.
The distribution has a long tail towards the right due to the larger values (0.30, 0.35, 0.40), while most values are clustered on the lower side. This is a classical indication of a positively skewed (right-skewed) distribution.
Hence, option (B) is correct. Final Answer: Positively skewed distribution
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