If all 24 samples from a population produce the same age x = 20, what are the sample meanµ and the sample variance 82? What if x = 20 or 21, 12 times each?
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.
If all 24 samples from a population produce the same age x = 20, what are the sample meanµ and the sample variance 82? What if x = 20 or 21, 12 times each?
All 24 samples from a population produce the same age x=20.
That is each xi=20 then
Now the mean,
Step by step
Solved in 3 steps with 3 images
