a) Write a note on the Skewness and Kurtosis consisting of their types and geometrical presentations. (b) Compute the Kurtosis for the following data using any appropriate formula and interpret the data with the help of its obtained numeric value. Classes Frequency 100-109 5 110-119 10 120-129 15 130-139 15 140-149 10
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.
(a) Write a note on the Skewness and Kurtosis consisting of their types and geometrical presentations.
(b) Compute the Kurtosis for the following data using any appropriate formula and interpret the data with the help of its obtained numeric value.
Classes Frequency
100-109 5
110-119 10
120-129 15
130-139 15
140-149 10
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