Explore BrainMass

Explore BrainMass

    Descriptive Statistics

    Not what you're looking for? Search our solutions OR ask your own Custom question.

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

    The number of dry cleaning orders picked up at Sunny Fresh Dry Cleaners was sampled over 4 hour periods. Below is the sample:
    61 58 67 52 25 64 38 49 51 61 58 61 27 61 58 34

    From this data set, compute the sample mean, median, mode and midrange. Compute the 1st quartile and 3rd and interpret their meanings

    © BrainMass Inc. brainmass.com December 15, 2022, 8:12 pm ad1c9bdddf

    Solution Preview

    Mean: Sum of all the data values/ Total number of data values
    = (61+58+.....+34)/16
    = 51.5625
    Arranging the given data in ascending order,
    25, 27, 34, 38, 49, 51, 52, 58, 58, 58, 61, 61, 61, 61, 64, 67

    Number of observations= 16 (even)
    When the number of observations (n) is even, the median is given by the mean of the n/2 th observation and (n+1)/2 th observation.
    So, in this case, the median will be the mean of the 8th observation and the 9th observation =

    The mode is that value of the observation, ...

    Solution Summary

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