This data is from a sample. Calculate the mean, standard deviation, and variance. 27.5 42.2 33.4 36.4 22.8 19.2 26.8 16 Please show the following answers to 2 decimal places. Sample Mean - Sample Standard Deviation Sample Variance - Ooops - now you discover that the data was actually from a population! So now you must give the population standard deviation. Population Standard Deviation -
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 mean of the data is calculated as follows:
Sample standard deviation is calculated as follows:
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