Explore BrainMass

Explore BrainMass

    Range, Interquartile Range, Variance, Standard Deviation

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    The Los Angeles Times regularly reports the air quality index for various areas of Southern california. A sample of air quality index values for Pomona provided the following data: 28, 42, 58, 48, 45, 55, 60, 49, and 50.

    1. Compute the range and interquartile range.

    2. Compute the sample variance and sample standard deviation.

    3. A sample of air quality index readings for Anaheim provided a sample mean 48.5, a sample variance of 136, and a sample standard deviation of 11.66. What comparisons can you make between the air quality in Pomona and that in Anaheim on the basis of these desciptive statistics?

    © BrainMass Inc. brainmass.com June 4, 2020, 3:10 am ad1c9bdddf
    https://brainmass.com/statistics/interquartile-range/range-interquartile-range-variance-standard-deviation-502398

    Solution Preview

    Dear student, please refer to the attachment for the solutions. Thank you.

    Problem:
    The Los Angeles Times regularly reports the air quality index for various areas of Southern California. A sample of air quality index values for Pomona provided the following data: 28, 42, 58, 48, 45, 55, 60, 49, and 50.

    1. Compute the range and interquartile range.

    2. Compute the ...

    Solution Summary

    This solution is comprised of detailed step-by-step calculation of the given problem and provides students with a clear perspective of the underlying concepts.

    $2.19

    ADVERTISEMENT