Part 3 of 5 Calculate the Pearson's index of skewness. (Round the mean, median and standard deviation to one decimal place and Pearson's index to two decimal places.) \[ \mathrm{PI}=0.27^{9} \] It can be concluded that the distribution is \( \square \) not significantly skewed. Try one last time Skip Part Recheck Save For Later Submit
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The Deep Dive
To calculate Pearson's index of skewness, you need the following formula: \[ \mathrm{PI} = \frac{3(\text{Mean} - \text{Median})}{\text{Standard Deviation}} \] First, calculate the mean, median, and standard deviation based on your data, rounding each to one decimal place. Then, plug those numbers into the formula. For instance, if your calculations yield a mean of 10.5, a median of 10.0, and a standard deviation of 2.5, your calculation will be: \[ \mathrm{PI} = \frac{3(10.5 - 10.0)}{2.5} = \frac{3(0.5)}{2.5} = \frac{1.5}{2.5} = 0.6 \] Once calculated, if the index is between -0.5 and 0.5, you can conclude that the distribution is not significantly skewed. Don't forget to double-check the figures before submitting! If the values skew too far off these limits, the distribution could indicate some skewness, so always keep a watchful eye on those calculations!
