The durations (minutes) of 26 electric power outages in the community of Somando Heights over the past five years are shown below 34. 49. 25. 66. 26. 10. 56. 10. 51. 4 16 45 41 100 31 18 13 50 22 4 18 26 88 27 13. 20; (A) find the mean, median, and mode mean median mode (b) are the mean and median are the same ? yes or no. The median is greater than or less than the median (c) is the mode of good measure of center for this data set yes or no (c) is the distribution skewed 1. yes, the distribution is skewed left 2. yes the distribution is skewed right 3. No the distribution is symmetric
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
The durations (minutes) of 26 electric power outages in the community of Somando Heights over the past five years are shown below
34. 49. 25. 66. 26. 10. 56. 10. 51. 4 16 45 41
100 31 18 13 50 22 4 18 26 88 27 13. 20;
(A) find the
mean
median
mode
(b) are the mean and median are the same ?
yes or no. The median is greater than or less than the median
(c) is the mode of good measure of center for this data set
yes or no
(c) is the distribution skewed
1. yes, the distribution is skewed left
2. yes the distribution is skewed right
3. No the distribution is symmetric
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