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Chapter 2: Q T2.13. (page 150)

A study recorded the amount of oil recovered from the 64 wells in an oil field, in thousands of barrels. Here are descriptive statistics for that set of data from statistical software.

Based on the summary statistics, is the distribution of amount of oil recovered from the wells in this field approximately Normal? Justify your answer.

Short Answer

Expert verified

Not approximately normal.

Step by step solution

01

Given information




Descriptive Statistics Oilprod




VariableNMeanMedianStDevMinMaxQ1Q3
Oilprod6448.2537.8040.242.00204.9021.4060.75
02

Explanation

The mean is significantly bigger than the median, showing that the distribution is right-skewed because any large or small data values effect the mean far more than the median. Their minimum and maximum values are 2and 204.90respectively, indicating that the minimum value is substantially closer to the mean and median than the maximum value of 204.90The distribution is not approximately normal because it is right-skewed where the normal distribution is symmetric.

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