1. Find the Median for the following data series. Class Interval Frequency 0-10 28 10-20 36 20-30 20 30-40 28 40-50 8
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.
21. Find the
|
Class Interval |
Frequency |
|
0-10 |
28 |
|
10-20 |
36 |
|
20-30 |
20 |
|
30-40 |
28 |
|
40-50 |
8 |
188.8
18.56
16.18
18.88
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