Given the following scores of 10 students from a class of 50, in a 30-item quiz in English, compute for the following: 1. Mean score 2. Median score 3. Modal score 4. Variance 5. 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.
Given the following scores of 10 students from a class of 50, in a 30-item quiz in English, compute for the following:
1.
2.
3. Modal score
4. Variance
5. Standard Deviation
|
Students |
English |
|
Allan |
20 |
|
Beth |
25 |
|
Carla |
15 |
|
David |
22 |
|
Ellen |
18 |
|
Fred |
19 |
|
Gina |
20 |
|
Helen |
20 |
|
Inna |
24 |
|
Jose |
26 |
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