The following stem-and leaf display of the dividend yields ($) for common stocks Stem-and-Leaf Display N = x Leaf Unit = 1.0 5 2 33444 11 2 668899 (14 ) 3 00112223344444 y 3 56778899 12 4 0002344 5 4 66789 i. Determine the value of x and y. ii. What is the value of the median? iii. Find the modal yield of this data set.
Inverse Normal Distribution
The method used for finding the corresponding z-critical value in a normal distribution using the known probability is said to be an inverse normal distribution. The inverse normal distribution is a continuous probability distribution with a family of two parameters.
Mean, Median, Mode
It is a descriptive summary of a data set. It can be defined by using some of the measures. The central tendencies do not provide information regarding individual data from the dataset. However, they give a summary of the data set. The central tendency or measure of central tendency is a central or typical value for a probability distribution.
Z-Scores
A z-score is a unit of measurement used in statistics to describe the position of a raw score in terms of its distance from the mean, measured with reference to standard deviation from the mean. Z-scores are useful in statistics because they allow comparison between two scores that belong to different normal distributions.
The following stem-and leaf display of the dividend yields ($) for common stocks
Stem-and-Leaf Display
N = x Leaf Unit = 1.0
5 2 33444
11 2 668899
(14 ) 3 00112223344444
y 3 56778899
12 4 0002344
5 4 66789
i. Determine the value of x and y.
ii. What is the value of the
iii. Find the modal yield of this data set.
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