Here is a frequency distribution table (FDT) for a small data set: data value frequency 16 6 17 7 18 5 19 4 20 2 Find the following measures of central tendency. mean (¯xx¯) = (Please show your answer to one decimal place.) median = (Please enter an exact answer.) mode = (Please enter an exact answer.)
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.
Here is a frequency distribution table (FDT) for a small data set:
| data value | frequency |
|---|---|
| 16 | 6 |
| 17 | 7 |
| 18 | 5 |
| 19 | 4 |
| 20 | 2 |
Find the following measures of
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