An executive's telephone log showed the lengths of 60 calls Initlated during the last week of July. 1 2 1e 3 3 20 13 2 1 26 1 1 2 1 7 1 2 1 2 12 1 4 2 29 1 1 4 2 1 1 1 6 1 3 1 3 1 1 5 1 18 Click here for the Excel Data File (b) Find the mean, median, and mode. (Round your answers to 2 decimal places.) Descriptive statistics Data count мean Median Mode (c) Do the measures of center agree? Yes O No (d) Are the data symmetric or skewed? If skewed, which direction? O Yes, the data are skewed to the right. O No, the distribution is symmetric. O Yes, the data are skewed to the left.
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.
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