Here is a frequency distribution table (FDT) for a small data set: data value frequency 13 10 14 12 15 16 16 30 17 18 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.
| data value | frequency |
|---|---|
| 13 | 10 |
| 14 | 12 |
| 15 | 16 |
| 16 | 30 |
| 17 | 18 |
Find the following measures of central tendency.
mean (¯xx¯) = (Please show your answer to one decimal place.)
median = (Please enter an exact answer.)
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