Find the mean for the scores in the following frequency distribution table
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.
Find the
|
Number |
Frequency |
Cumulative Frequency |
|
16 |
15 |
|
|
15 |
10 |
|
|
13 |
9 |
|
|
12 |
7 |
|
|
11 |
4 |
The frequency table with the corresponding frequencies is,
| Number | Frequency | Cumulative frequency |
| 16 | 5 | 15 |
| 15 | 1 | 10 |
| 13 | 2 | 9 |
| 12 | 3 | 7 |
| 11 | 4 | 4 |
| Total frequency | 15 |
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