Trimmed Means Consider the followng set of data (n=16) Find each of the following: mean, trimmed mean A, trimmed mean B, trimmed mean C, median Also comment on the relation between these values. A -- 88%, B -- 75%, C -- 50% (skewed to right, 2 large outliers) 32, 33, 35, 38, 43, 47, 51, 53, 58, 64, 69, 74, 83, 116, 118, 153
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.
Trimmed Means
Consider the followng set of data (n=16)
Find each of the following:
Also comment on the relation between these values.
A -- 88%, B -- 75%, C -- 50%
(skewed to right, 2 large outliers)
32, 33, 35, 38, 43, 47, 51, 53, 58, 64, 69, 74, 83, 116, 118, 153
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