Directions: Complete the following table and solve for the unknowns. 1. A population consists of the thre numbers (3, 5, 7). Make a tabe and compute for the following: (a) Population Mean, (b) Population variance and (c) Population standard deviation. Observation x x-u (x-u)2 P (X=x) 1 3 2 5 3 7
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.
Directions: Complete the following table and solve for the unknowns.
1. A population consists of the thre numbers (3, 5, 7). Make a tabe and compute for the following: (a) Population Mean, (b) Population variance and (c) Population standard deviation.
| Observation | x | x-u | (x-u)2 | P (X=x) |
| 1 | 3 | |||
| 2 | 5 | |||
| 3 | 7 |
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